GAS ARMRATTON underway at sea
DECKTANK Logo
DECKTANK
Maritime Solutions
Commercial & Technical Maritime Solutions — LPG · LEG · NH3

Where Maritime
Expertise Meets
Precision.

DECKTANK delivers independent maritime solutions purpose-built for the LPG shipping sector — gas carrier acquisitions, TC strategy, OPEX control and cargo system operations — specialising in LPG, LEG and NH3 carriers, with broad expertise across LPG, LEG and NH3. Founded and led by a team of gas professionals with 37+ years of hands-on LPG, LEG and NH3 carrier experience.

37+
Years maritime experience
30–50
Market players per year
LPG·LEG
LPG · LEG · NH3 specialism
100%
Independent advisory

Ten Specialist LPG Services

Vessel Acquisition Advisory
VLGC, LGC and MGC acquisition modelling — IRR/NPV built on Fearnleys TC benchmarks, BLPG route TCE data, 5th Survey cost budgeting, OPEX escalation and LDT scrap values for fully refrigerated and semi-refrigerated gas carriers.
Commercial Management
LPG time charter negotiation and voyage fixture strategy benchmarked against Fearnleys VLGC assessments — covering BLPG1/BLPG2/BLPG3 routes, Saudi CP price dynamics, propane/butane/LEG/NH3 cargo economics and USG→Asia rate trends.
Technical Management & OPEX
Gas carrier OPEX benchmarking, IGC Code compliance, Special Survey scope & cost planning, reliquefaction system maintenance, cargo compressor cost control and CII improvement roadmaps for aging VLGC fleets.
Market Research & Feasibility
VLGC and LGC rate forecasting, PDH demand modelling, Chinese LPG import analysis, USG export capacity studies, Fearnleys/Argus data integration and LPG orderbook impact assessments for investment decision-making.
Gas Carrier Solutions
Propane & butane cargo system reviews, boil-off and reliquefaction management, IGC Code compliance audits, Type A/C containment inspections, gas damage surveys and STCW gas certification guidance — from VLGC to pressurised coaster.
Reliquefaction Inspection
Pre-chartering inspection of LPG reliquefaction systems on behalf of charterers — compressor condition, plant capacity, P&ID compliance, deficiency reporting and hire negotiation support.
S&P Advisory — LPG Only
Full S&P lifecycle for LPG carriers — vessel selection, physical assessment, MoA & TC review, LPG heel negotiation and delivery attendance.
Physical Delivery Coordination
End-to-end coordination of LPG carrier physical deliveries — certificate verification, on-board inspection, LPG heel & bunker negotiation, protest letters and post-delivery claim preservation — vessel selection, on-board physical assessment, Saleform MoA & TC review, LPG heel negotiation and delivery attendance with certificate verification and post-delivery claim preservation.
Newbuilding Supervision — LPG
Full newbuilding supervision for LPG gas carriers in Korean and Chinese yards — 60+ hulls supervised over 20 years including VLGC, LGC, LEG, semi-refrigerated and pressurised vessels from steel cutting to gas trials.
Cargo Claim Investigation
LPG cargo claim evaluation for P&I Clubs, H&M underwriters and owners — contamination, shortage, off-spec delivery, reliquefaction failure and STS incidents. Expert witness reports to arbitration standard.

Independent Advice.
Real-World Experience.

We are not brokers, shipowners or banks. We are independent advisors working exclusively for our clients — every recommendation driven by rigorous analysis and decades of hands-on maritime experience across gas carriers, tankers and bulk vessels.

01
Truly Independent
No conflicts of interest with LPG brokers, cargo traders or shipowners. We work exclusively for you — whether evaluating a VLGC acquisition, contesting a cargo damage claim or renegotiating a time charter fixture.
02
Quantitative Rigour
Full IRR/NPV models calibrated to LPG market realities — Fearnleys TC benchmarks, PDH demand cycles, VLGC OPEX escalation profiles and current LDT scrap rates from Indian subcontinent breaking yards.
03
LPG Specialism
37+ years of collective hands-on LPG, LEG and NH3 carrier expertise — from sea service as Chief Engineers to newbuilding supervision and VLGC fleet management at CTO level.
04
Confidential & Discreet
Strict NDA on all mandates. We understand the commercial sensitivity of VLGC acquisition negotiations, TC rate intelligence, LPG cargo claim positions and gas fleet strategic plans.
LPG VLGC Gas Carrier
Our focus
Specialist advisory for LPG gas carriers — VLGC, LGC, MGC and pressurised fleet.
© Wikimedia Commons / CC

LPG Knowledge & Market Intelligence

Chemistry, regulations, Fearnleys rate data, trade routes, CII and commercial terms — all in one place.

30–50 LPG Market Players Served Per Year

Our team's advisory network and market knowledge spans the full LPG, LEG and NH3 value chain — from major producers, traders and NOCs to shipowners, charterers, brokers and financial institutions worldwide.

Ready to start a conversation?

Discuss a VLGC acquisition, TC strategy, cargo system issue or LPG market question with our team.

VLGC at terminal jetty

Our Services

Ten specialist LPG disciplines — from vessel acquisition and TC strategy to reliquefaction inspection, newbuilding supervision, S&P advisory and cargo claim investigation.

VLGC LPG Carrier
01

Vessel Acquisition Advisory

We guide LPG vessel owners and investors through every stage of a gas carrier acquisition — from VLGC and LGC market screening and price benchmarking against Fearnleys weekly indices to full IRR/NPV modelling, due diligence and financing structure analysis. Our models are calibrated specifically to LPG economics: TC rate scenarios referenced to BLPG2/BLPG3 routes, OPEX escalation based on real aging gas carrier cost profiles, 5th Special Survey budgeting from direct survey experience, scrap terminal values at current Indian subcontinent LDT rates, and leverage sensitivity across standard maritime financing structures — giving you a complete, quantified picture before you commit capital.

IRR / NPV ModellingPrice BenchmarkingDue DiligenceFinancing StructuresRisk AssessmentDeal Negotiation
02

Commercial Management

Strategic LPG chartering advice and TC negotiation across the full gas carrier spectrum. We monitor Fearnleys weekly VLGC assessments, BLPG1/BLPG2/BLPG3 TCE performance, Saudi Aramco CP price movements and USG export programme dynamics to identify the right moment to fix, renew or go spot. We advise on TC term structures, performance clause formulation, redelivery positioning, off-hire risk allocation and rate escalator mechanics — with specific focus on USG→Asia propane trades, MEG→India butane flows and European LPG coastal distribution economics.

TC NegotiationChartering StrategyRevenue OptimisationMarket IntelligenceVoyage Management
03

Technical Management & OPEX Consulting

Independent technical and OPEX advisory built specifically for LPG carriers. We benchmark crew costs for STCW gas-certified officers, maintenance budgets for aging VLGC machinery and cargo systems, lubrication specifications for reliquefaction compressors and insurance costs including MEG war risk premiums. Drawing on direct experience coordinating 5-year Special Surveys on fully refrigerated gas carriers, we provide IGC Code compliance reviews, survey scope and cost planning, cargo system condition assessments and CII rating improvement roadmaps — critical for VLGCs aged 20–27 where charterer acceptance narrows and operating costs accelerate sharply.

OPEX BenchmarkingCrew Cost AnalysisSurvey PlanningCII ComplianceMaintenance BudgetingInsurance Review
04

Market Research & Feasibility Studies

Bespoke LPG market research and investment feasibility studies for gas carrier owners, investors, shipbrokers and lending banks. Our research covers VLGC and LGC freight rate forecasting, PDH plant demand modelling, Chinese and Indian LPG import growth analysis, USG export capacity assessments, VLGC orderbook delivery schedules and the impact of MEG supply disruption on Atlantic basin freight. We integrate Fearnleys weekly rate data, Argus propane price assessments, Saudi Aramco CP benchmarks, Clarksons fleet databases and WLPGA demand statistics to produce analysis that is current, rigorous and decision-ready.

Rate ForecastingFleet StudiesDemand AnalysisOrderbook AssessmentTrade Flow Modelling
05

LPG · LEG · NH3 — Technical & Operational Solutions ()

Our core identity — and the reason DECKTANK exists. We provide deep, hands-on technical and operational advisory for LPG, LEG and NH3 vessel owners and operators across the full gas carrier spectrum, Services include propane, butane, ethylene (LEG) and anhydrous ammonia (NH3) cargo system reviews, reliquefaction plant performance assessment, boil-off rate management, cargo compressor overhaul planning, Type A and Type C containment inspection, IGC Code compliance audits, gas damage survey support, cargo claim technical assistance and STCW gas tanker certification guidance. Our team's professionals have sailed as Chief Engineers on LPG carriers, supervised 60+ newbuilding hulls including fully refrigerated LPG, LEG bilobe Type-C and semi-refrigerated vessels across Korean and Chinese yards, and has led VLGC fleet operations as CTO. We bring that depth directly to every mandate.

VLGC / LGC / MGCLEG / NH3IGC CodeCargo SystemsReliquefactionBoil-Off Management
06

Reliquefaction System Inspection — Pre-Chartering

LPG carrier cargo deck and manifold system
LPG cargo manifold system — newbuilding outfitting

We conduct independent pre-chartering inspections of LPG vessel reliquefaction systems exclusively on behalf of time charterers — providing a technically rigorous, unbiased assessment of cargo system condition before a TC fixture is signed. Our inspection scope covers the full reliquefaction plant: compressor condition and capacity (high-stage and low-stage), inter-cooler and after-cooler integrity, oil separator function, condenser performance, P&ID compliance against the IGC Code, safety relief valve certification, control and instrumentation systems, and cargo tank pressure management capability. We assess whether the system can maintain cargo temperatures within contractual limits on the intended trade route, and we deliver a clear deficiency report — with repair recommendations and cost estimates — giving the charterer the technical leverage to negotiate pre-fixture repairs or hire adjustments. A failed reliquefaction system during a VLGC voyage can cost $500,000–$1,500,000 in off-hire, cargo losses and emergency repairs. Pre-chartering inspection is the single most cost-effective risk management tool available to an LPG charterer.

Compressor assessmentCapacity verificationP&ID complianceIGC Code reviewSafety valve certificationDeficiency reportingCharterer representationHire negotiation support
07

Sale & Purchase Advisory — LPG Gas Carriers Only

We provide fully independent Sale & Purchase advisory exclusively for LPG gas carriers — covering the entire transaction lifecycle from initial vessel selection through physical assessment, contract negotiation and delivery. We represent buyers or sellers in VLGC, LGC, MGC, semi-refrigerated and fully pressurised vessel transactions with no brokerage commissions, no freight interests and no relationships with the opposing side. Our only obligation is to the client who instructed us.

1
LPG Vessel Selection & Market Screening

We identify and shortlist LPG vessels matching the owner's or investor's criteria — vessel type (VLGC, LGC, semi-refrigerated, pressurised), cargo capacity, age range, class society, containment system (Type A / Type C / bilobe), propulsion configuration and trade route suitability. We benchmark asking prices against current Fearnleys and Clarksons market assessments, screen class society records for condition of class, outstanding recommendations and survey due dates, and filter out vessels with known structural, cargo system or propulsion history issues that are commonly disguised in broker presentations. For buyers seeking a propane-suitable VLGC, the difference between a well-maintained Japanese-built hull and a cheaper alternative yard can mean $3–5M in future maintenance cost — we know which vessels to target and which to avoid.

2
Physical Assessment & On-Board Inspection

Our team attends the vessel to conduct a comprehensive physical assessment before any offer is made or letter of intent signed. Our inspection scope for LPG carriers goes significantly beyond a standard condition survey: main engine condition (compression tests, turbocharger performance, EPL device verification), cargo compressor and reliquefaction plant operational test, cargo pump condition and suction strainer inspection, Type A tank structural review (framing, insulation vapour barrier, dew point monitoring system), safety relief valve certificates and setpoints, P&ID compliance against IGC Code requirements, emergency shutdown system test, cargo control room instrumentation, gas detection system calibration status, Class survey status verification on board, cargo hose and manifold condition, and accommodation and safety equipment inventory. Findings are documented in a structured deficiency report with photographs, cost estimates for each item and a clear recommendation — proceed, renegotiate or walk away. This report becomes the technical foundation of all price negotiations that follow.

3
MoA Review & Negotiation — Saleform 2012

We conduct a clause-by-clause technical review of the Memorandum of Agreement — typically Saleform 2012 or Norwegian Saleform 93 for LPG transactions — identifying provisions that create disproportionate risk for the buyer. Key areas we examine include: the inspection and acceptance clause (acceptance window duration — a 24-hour window is dangerously short for a gas carrier inspection; we negotiate for 48–72 hours), the "as is where is" versus guaranteed condition scope, the drydocking and underwater inspection obligations, the sellers' representations regarding class certificates and outstanding recommendations, the bunker and LPG heel quantity and pricing mechanisms at delivery, the deposit refundability structure and banking arrangements, arbitration jurisdiction and governing law (particularly relevant for transactions involving non-Greek or non-English parties), trading and operational restrictions during the pre-delivery period, and any Iran, Russia or sanctioned-entity trading warranties. We also advise on addenda covering delivery condition standards specific to gas carriers — cargo system operability, reliquefaction plant condition, certificate validity and SIRE inspection history.

4
Charter Party Review — Attached or Novated TC

Most VLGC and LGC acquisitions involve a vessel already on time charter — the TC either novates to the new owner or contains a change-of-ownership clause that requires charterer consent and may trigger options or early termination rights. We review the attached charter party in full from the buyer's perspective, with specific attention to: hire rate and payment terms, TC duration and redelivery range, performance warranties (speed and consumption at defined laden and ballast conditions — particularly important for EPL-limited VLGCs where actual performance deviates from design), off-hire thresholds and dispute resolution mechanisms, maintenance obligations during the TC period (who funds cargo system repairs — owner or charterer), the SIRE vetting acceptance history and any charterer-imposed vessel condition requirements, cargo compatibility restrictions (propane-only, butane-capable, ammonia-capable), and trading exclusion zones. We quantify the financial impact of any adverse TC clause before the buyer completes — a poorly reviewed charter party on a VLGC acquisition can cost the new owner millions in unanticipated costs or reduced hire.

5
Delivery Services — LPG Carrier Specific

Delivery of an LPG carrier is a technically complex event that differs fundamentally from a conventional vessel delivery — and where inadequate representation by the buyer routinely results in costly post-delivery disputes. Our team attends delivery and manages the entire process on behalf of the buyer across all critical stages. Documentation review: verification of all class certificates (Certificate of Fitness, Class and Statutory, IOPP, SMC, DOC), outstanding survey items, condition of class recommendations and their resolution status, flag state certificates and SIRE inspection history. On-delivery inspection: physical confirmation of vessel condition matching the MoA representations, cargo system operational test (reliquefaction, boil-off, cargo compressors, pump functionality), main engine running test, safety system confirmation and critical equipment inventory check. LPG heel negotiation: the delivery heel of propane or butane remaining in cargo tanks is a significant financial item — on a VLGC with 650 MT of propane heel at current CP prices this represents $330,000–$490,000. We negotiate heel quantity, pricing basis (Q1/Q2 CP, Mont Belvieu, Argus), measurement methodology and payment timing. Bunker quantity and quality: independent survey and ROB verification. Spares inventory: verification of contractually required onboard spares, particularly for cargo compressors, reliquefaction components and safety systems. Protest and reservation letters: preparation of formal notations for any items not matching MoA conditions to preserve the buyer's post-delivery claims.

Vessel selection & screening Physical on-board inspection Deficiency report & costing Saleform 2012 MoA review Charter party review Price renegotiation LPG heel negotiation Delivery attendance Certificate verification Post-delivery claim preservation
08

Newbuilding Supervision — LPG Gas Carriers Only

LPG cargo tank under construction at Korean shipyard
LPG cargo tank construction — Korean shipyard

We provide comprehensive newbuilding supervision services exclusively for LPG gas carriers — from contract negotiation and specification review through steel cutting, block assembly, outfitting, commissioning and sea trials. Our team has overseen the construction of more than 60 hulls over the last 20 years at leading Korean and Chinese shipyards — including fully refrigerated LPG carriers (38,000 CBM), semi-refrigerated LPG, LEG and NH3 vessels (9,000–22,000 CBM), bilobe Type-C LPG and LEG tank carriers, and product tankers. This direct newbuilding experience gives us an understanding of Korean and Chinese shipyard construction methods, subcontractor quality control and FAT (Factory Acceptance Testing) requirements that an owner's representative without yard experience simply cannot replicate. Our supervision scope for LPG gas carrier newbuildings includes: specification compliance monitoring, cargo containment system inspection (Type A prismatic / Type C pressure vessels / bilobe tanks), reliquefaction and boil-off plant commissioning, IGC Code compliance verification, cargo compressor and safety system FAT, class attendance coordination, gas trials supervision, and delivery inspection. We achieve cost savings through active yard negotiation — achieving significant cost reductions through systematic monitoring, active yard negotiation and proactive issue resolution.

Specification reviewSteel & block inspectionCargo system commissioningIGC Code complianceReliquefaction plant FATGas trialsKorean & Chinese yardsClass coordinationDelivery inspection
08B
Core Service Highlight

Physical Delivery Coordination — LPG Gas Carriers

LPG ship-to-ship transfer operation
LPG Ship-to-Ship transfer operation

Physical delivery of an LPG carrier is one of the most technically and commercially complex events in gas carrier ownership — and one where inadequate representation by the buyer routinely results in costly post-delivery disputes, missed deficiencies and financial losses. Our team coordinates the entire delivery process on behalf of buyers, representing their interests at every stage with technical depth and commercial precision.

📋 Pre-Delivery Documentation Review

Verification of all class certificates (Certificate of Fitness for Carriage of Liquefied Gases in Bulk, Class and Statutory certificates, IOPP, SMC), outstanding survey items and conditions of class, flag state certificates, SIRE vetting history and any charterer acceptance restrictions. Certificate gaps identified at this stage are used as contractual leverage before final delivery acceptance.

🔍 On-Board Physical Inspection at Delivery

Full on-board inspection confirming vessel condition matches MoA representations: cargo reliquefaction system operational test, cargo compressor and pump functionality, Type A/C containment condition check, emergency shutdown system test, safety relief valve setpoint verification, main engine running inspection, accommodation and lifesaving equipment inventory. All deficiencies documented with photographs as the basis for post-delivery claims.

⚖️ LPG Heel & Bunker Quantity Negotiation

The LPG heel remaining in cargo tanks at delivery is a significant financial item — on a VLGC with 600–700 MT of propane heel, the value ranges from $300,000 to $500,000+ depending on current CP pricing. We negotiate heel quantity, pricing basis (Saudi Aramco CP, Mont Belvieu, Argus North Sea), measurement methodology, temperature correction factors and payment timing. Simultaneously, we manage ROB bunker quantity and quality verification by independent surveyor.

📝 Protest Letters & Post-Delivery Claim Preservation

Preparation of formal protest and reservation letters for any items not fully complying with MoA conditions — preserving the buyer's legal right to pursue post-delivery claims under English Law or the applicable governing law. Deficiency schedules submitted within contractual timeframes with full photographic and technical substantiation.

Certificate verification On-board inspection LPG heel negotiation Bunker ROB survey Protest letters Post-delivery claims
09

Cargo Claim Evaluation & Investigation — LPG Gas Carriers Only

We provide independent cargo claim evaluation and technical investigation services for LPG cargo incidents — exclusively on behalf of P&I Clubs, Hull & Machinery underwriters, shipowners and cargo interests. Our claim services cover the full spectrum of LPG cargo incidents: cargo contamination (propane/butane/LPG mix specification failures, ethylene (LEG) purity disputes, NH3 moisture and contamination claims, cross-contamination from previous cargo, tank cleanliness disputes), cargo shortage and measurement disputes (ullage and temperature discrepancy analysis, liquid/vapour interface calculations, ASTM table corrections), off-specification cargo delivery (moisture content, H₂S levels, mercaptan dosing disputes), cargo damage arising from reliquefaction failure or boil-off mismanagement, structural damage to cargo containment systems (Type A and Type C), and Ship-to-Ship transfer incidents (hose failure, manifold overpressure, vapour return system disputes). We have performed cargo and damage surveys for international Hull Clubs and P&I Clubs, and served as Head Technical Advisor on gas claims for major European shipmanagement and maritime advisory companies. Our technical investigation reports are structured to arbitration and court standards, with clear chain-of-causation analysis, quantified damage assessment, IGC Code and SIGTTO best practice references, and expert opinion statements that withstand cross-examination.

P&I Club advisoryH&M underwriter supportContamination investigationCargo shortage disputesOff-spec LPG claimsReliquefaction failureSTS incident investigationExpert witness reportsArbitration support

Need a specific service?

Tell us about your gas carrier project — acquisition, commercial management, OPEX, claims or market research.

Shipyard aerial - vessels under construction

About DECKTANK

Independent maritime advisors with deep roots in commercial and technical shipping operations.

Built From the Inside Out

DECKTANK was founded and led by a team of gas professionals whose careers span sea service on LPG carriers at Chief Engineer level, technical management of VLGC fleets, LPG chartering advisory and senior executive roles in gas carrier shipping companies. DECKTANK is not a consultancy that advises on shipping from a distance. It was built by someone who has stood inside propane cargo tanks, coordinated Special Surveys in Korean yards, led TC chartering teams through volatile LPG market cycles and managed gas carrier claims on behalf of international Hull Clubs and P&I Clubs.

Our name reflects that foundation. A decktank is a working part of a vessel — functional, integral, not decorative. We bring the same approach to our advisory work: practical, precise, and built for purpose.

We operate as a fully independent advisory firm with no ownership links to shipowners, LPG brokers, cargo traders or financial institutions. In a sector where conflicts of interest are common — brokers with fixtures to close, managers with fleets to fill, banks with loans to place — this independence is our most valuable asset. Every IRR model we build, every TC negotiation we advise on and every cargo system we inspect serves a single purpose: your best interest.

Our primary specialism is LPG, LEG and NH3 shipping — VLGC, LGC, MGC, semi-refrigerated and pressurised gas carriers trading propane, butane, LEG, NH3 and VCM cargoes worldwide. This is a sector that requires a depth of technical, operational and commercial knowledge that generalist maritime advisors simply cannot provide. From propane cargo chemistry and IGC Code compliance to PDH market demand cycles and BLPG route TCE economics — LPG, LEG and NH3 is where DECKTANK lives — with broad expertise across LPG, LEG and NH3.

DECKTANK
DECKTANK — Maritime Solutions

DECKTANK Maritime Solutions — At a Glance

Founded2022
HeadquartersEurope
Primary SpecialismLPG · LEG · NH3
Service Areas9 specialist disciplines
Approach100% Independent
ClientsOwners · Operators · Investors
Market Coverage30–50 LPG market players served per year
ConfidentialityStrict NDA policy
N. Ioannou — Founder DECKTANK
N. Ioannou
Principal Advisor — Gas Segment
Available on request
Greece / Europe
Qualifications
MBA — Oil & Gas Management, Edinburgh Business School
BSc Marine Engineering, Southampton University
Class A Marine Engineer — Chief Engineer Certificate
Advanced LPG/LNG Operations — KESEN / Warsash Nautical Institute
Category-1 Thermographer — ITC-Teledyne FLIR (Sweden)
Technical Committee Member — Major Classification Societies
External Technical Consultant — International P&I Club
A Message from Our Team

"LPG, LEG and NH3 shipping is not a segment of the maritime industry.
It is a discipline of its own."

Our professionals began their careers at sea as marine engineers, sailing on LPG carriers, product tankers and oil tankers — accumulating hands-on experience with fully refrigerated propane and butane cargoes, ethylene (LEG) systems and anhydrous ammonia (NH3) operations. Those years at sea — managing propane and butane cargoes, maintaining refrigeration and reliquefaction plants, navigating the complexity of Type A and Type C containment systems — built a foundation that no classroom or consultancy desk can replicate. By the time our senior professionals came ashore, they understood LPG carriers from the inside out.

What followed was over two decades of building and leading gas carrier operations at the highest level. As Managing Director of a major European LPG shipping company for nearly nine years, Our team oversaw major newbuilding programmes — coordinating the construction of more than 60 hulls over the last 20 years at leading Korean and Chinese shipyards, including fully refrigerated LPG carriers, LEG bilobe Type-C vessels and semi-refrigerated units. Annual operating costs were reduced significantly, the commercial life of aging VLGC fleets extended by a decade, and long-term Ship-to-Ship transfer operations managed at major Eastern Mediterranean anchorage areas.

As Chief Technical Officer and Head of Technical for LPG/LEG/NH3 at a major oil and gas trading and shipping group, Our team led the establishment of new gas carrier segments, achieving strong fleet mobilisation year-on-year, reducing newbuilding costs through active yard negotiation and monitoring, and advising chartering teams on technical vetting of LPG/LEG/NH3 vessels. Our professionals have performed gas carrier damage surveys for international Hull Clubs and served as Head Technical Advisors on gas claims for major European shipmanagement companies — with all findings and reports held in strict confidence.

DECKTANK was established because our team saw a gap the market was not filling: owners and investors making multi-million dollar decisions about LPG carriers without access to truly independent, technically deep advisory. Brokers have fixtures to close. Banks have loans to place. Shipowners have interests of their own. We have none of those conflicts. At DECKTANK, our only obligation is to the client — whether evaluating a VLGC acquisition, restructuring a TC portfolio, controlling OPEX on an aging gas carrier fleet or navigating a cargo damage claim.

Every mandate we take draws directly on our team's combined experience. When we model the acquisition economics of a 23-year-old VLGC, we know what the 5th Special Survey actually costs. When we review a cargo system, our professionals have stood inside those tanks. When we advise on a TC negotiation, we understand both sides of the table. That is what DECKTANK brings — and that is what makes the difference.

N. Ioannou
Founder & Director — DECKTANK · Maritime Solutions
37+ years LPG · LEG · NH3 Maritime Solutions
37+
Years in LPG · LEG · NH3
60+
Hulls supervised (20yr)
96%
Fleet utilisation
100%
Independent

How We Work

Independence

No financial relationships with brokers, shipyards, banks or lenders. Our only obligation is to deliver honest, unbiased advice. We tell you what we find — not what you want to hear.

Precision

Every recommendation is supported by rigorous quantitative analysis. We build detailed financial models, stress-test assumptions and present findings with the precision that high-stakes maritime decisions demand.

Responsiveness

Shipping moves fast. Markets shift overnight. We work with urgency and clarity, delivering analysis on the timescales that real investment and operational decisions require.

06

Reliquefaction System Inspection — Pre-Chartering (On Behalf of Charterers)

Before fixing a VLGC, LGC or MGC on time charter, charterers need to know the true condition of the cargo reliquefaction plant — not just what the owner's survey says. We conduct independent, hands-on inspections of LPG reliquefaction systems on behalf of charterers prior to fixture — assessing compressor performance and mechanical condition, motor and cooling water system integrity, condenser and evaporator efficiency, safety relief valve settings, P&ID compliance with design parameters and overall plant capacity versus rated output. Our reports identify deferred maintenance, hidden deficiencies and foreseeable failure risk — giving charterers the technical leverage to renegotiate terms, impose condition precedents or walk away from a substandard vessel before signing the charterparty. This service draws directly on our team's direct experience as Chief Engineers on LPG carriers and CTOs of VLGC fleets, where reliquefaction plant management was a daily operational and commercial reality.

Reliquefaction Plant AssessmentCompressor Condition ReviewBoil-Off Performance TestP&ID Compliance AuditPre-Fixture Technical ReportCharterer RepresentationVLGC / LGC / MGCDeficiency Identification
07

Sale & Purchase Advisory — LPG Gas Carriers Only

We provide independent Sale & Purchase advisory exclusively for LPG gas carriers — acting on behalf of buyers, sellers or their representatives at every stage of the transaction. Our S&P advisory covers market valuation and fair price assessment for VLGC, LGC, MGC and pressurised carriers, identification of suitable candidates from the active secondhand market, technical evaluation of class records and survey status, MOA negotiation support including Saleform terms and addenda, co-ordination of pre-purchase surveys and Idwal/condition inspection reviews, and post-completion delivery condition assessment. Unlike generalist S&P brokers, we bring direct LPG technical expertise to every valuation — understanding how reliquefaction plant condition, IGC Code certification status, 5th Special Survey proximity, EEXI/CII compliance and cargo system integrity affect true market value and post-acquisition OPEX. With over 37 years of LPG carrier experience including hands-on newbuilding supervision and fleet management, we ensure our clients see the full technical picture before money changes hands.

Market Valuation (VLGC/LGC/MGC)MOA Negotiation SupportClass Records ReviewPre-Purchase Survey Co-ordinationSaleform 2012 AdvisoryDelivery Condition AssessmentBuyer / Seller RepresentationTechnical Due Diligence
08

Newbuilding Supervision — LPG Gas Carriers Only

We provide full newbuilding supervision services exclusively for LPG and gas carrier construction projects — covering fully refrigerated VLGC and LGC, semi-refrigerated MGC, LEG bilobe Type-C, pressurised carriers and specialised gas units. Our supervision scope includes yard selection and contract negotiation support, steel cutting and keel laying attendance, structural and outfitting stage inspections, cargo tank fabrication and pressure testing, reliquefaction plant installation and factory acceptance testing, IGC Code compliance verification throughout construction, class survey co-ordination, sea trials attendance and delivery inspection. Our team has supervised the construction of more than 60 hulls over the last 20 years at leading Korean and Chinese shipyards — including 4 x 38,000 CBM fully refrigerated LPG carriers, 7 x 9,000 CBM semi-refrigerated LPG, 6 x 9,000 CBM LEG carriers and multiple bilobe Type-C tank units. This direct newbuilding experience means we know exactly where LPG carrier construction shortcuts happen, what yard claims look like and how to protect an owner's interests from steel to sea trials.

Yard Selection & Contract SupportSteel Cutting to DeliveryCargo Tank Fabrication InspectionReliquefaction FAT AttendanceIGC Code Compliance VerificationSea Trials AttendanceVLGC / LGC / LEG / PressurisedKorean & Chinese shipyards
09

Cargo Damage Claims & Investigation — LPG Carriers (P&I / Insurers / Owners)

We investigate, evaluate and report on cargo damage claims and operational incidents involving LPG and gas carrier vessels — acting on behalf of P&I Clubs, underwriters, Hull & Machinery insurers, shipowners and charterers. Our claims services cover contamination and off-specification cargo investigations, reliquefaction plant failure and cargo temperature exceedance events, tank leakage and containment integrity incidents, cargo quantity disputes (B/L vs outturn), LPG vapour release and safety incident investigations, compressor damage and cargo system mechanical failure analysis, and Ship-to-Ship transfer incident assessment. We compile technical expert reports suitable for arbitration, court proceedings and settlement negotiations — drawing on direct experience performing gas carrier damage surveys for international Hull Clubs and P&I Clubs, and serving as Head Technical Advisor on gas claims for major European shipmanagement companies. Our reports are technically precise, commercially aware and prepared to the evidential standards required by P&I Clubs and marine insurers.

Cargo Contamination InvestigationOff-Spec LPG Cargo ClaimsReliquefaction Failure AnalysisTank Leakage & Containment IncidentsCargo Quantity DisputesP&I Club Expert ReportsH&M Underwriter SupportHull Club & P&I Experience
10

Vetting Inspection Support, Ship-to-Ship Operations & Expert Witness — LPG Carriers

We provide a range of specialist operational and technical support services exclusively for LPG and gas carrier stakeholders. Vetting inspection support: we assist owners and managers in preparing for SIRE, CDI and private charterer vetting inspections on LPG vessels — reviewing SIRE records, identifying recurring observations, advising on corrective action and coaching officers on inspection readiness for gas-specific technical questions. Ship-to-Ship operations advisory: drawing on extensive LPG STS engagement experience at Eastern Mediterranean and other strategic anchorage areas, we advise on LPG STS operational planning, equipment requirements, mooring master briefing, compatibility assessment and risk evaluation for both VLGC and smaller gas carrier STS transfers. Expert witness and technical consultation: we provide independent technical expert opinions for maritime arbitration, P&I Club legal proceedings and commercial dispute resolution involving LPG carrier operations, cargo handling, reliquefaction system performance and gas carrier seaworthiness — to the standards required by English law maritime proceedings and international arbitration panels.

SIRE / CDI Vetting PreparationLPG Inspection Readiness CoachingSTS Operations AdvisoryEastern Mediterranean STS ExperienceVLGC STS Compatibility AssessmentExpert Witness ReportsMaritime Arbitration SupportEnglish Law Proceedings

Let's work together.

Tell us about your LPG vessel, acquisition target or gas carrier operational challenge.

Aerial top-down LPG carrier cargo deck

LPG Knowledge & Market Intelligence

Technical fundamentals, regulatory framework, commercial structures and live market context — everything a ship owner, operator or investor needs to understand the LPG, LEG and NH3 shipping sector.

Live Market Intelligence Access real-time LPG freight rates, market reports and industry intelligence directly from leading sources
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What is a Gas Carrier?

Gas carriers are specialised vessels designed to transport liquefied gases in bulk. Because gases occupy enormous volumes in their natural state, liquefaction — either by compression, refrigeration or a combination of both — dramatically improves transportation efficiency. Gas carriers are equipped with sophisticated cargo containment systems, temperature control equipment, pressure management systems and dedicated safety installations that distinguish them fundamentally from conventional tankers.

What is LPG (Liquefied Petroleum Gas)?

LPG is composed primarily of propane (C₃H₈) and butane (C₄H₁₀) — hydrocarbons that are gaseous at normal atmospheric temperature and pressure but can be liquefied by modest compression or refrigeration. LPG is derived from two sources: natural gas processing (approximately 60%) and crude oil refining (approximately 40%).

LPG is used across a vast range of applications worldwide: as a petrochemical raw material (propane dehydrogenation / PDH plants converting propane to propylene for plastics), as fuel for power generation, transportation, commercial and household heating, and as a clean energy alternative in developing markets where piped natural gas infrastructure does not exist.

Compared to heavy fuel oil, LPG significantly reduces emissions of CO₂, sulphur oxides (SOx) and nitrogen oxides (NOx), making it an important transitional clean energy source in the global decarbonisation pathway.

Key Physical Properties
Propane boiling point
–42°C
Butane boiling point
–0.5°C
Vapour expansion ratio
270:1 (propane)
Liquid density @ 15°C
508 kg/m³ (propane)
Heavier than air
Yes — safety critical
Flammability range
2.1%–9.5% (propane)
CO₂ Reduction vs Heavy Oil
LPG (propane/butane)–16.4%
Ethane–18.6%
Ammonia (NH₃)–100% (zero CO₂)
Source: IINO KAIUN / IMO data

What is LEG — Liquefied Ethylene Gas?

Ethylene (C₂H₄) is one of the most important petrochemical raw materials in the world — a building block for plastics, synthetic fibres, packaging materials, antifreeze and countless industrial chemical products. When transported by sea, ethylene is liquefied by cooling it to approximately –100°C at atmospheric pressure, requiring purpose-built, cryogenically capable cargo containment systems (typically bilobe Type-C pressure vessels). Ethylene is primarily derived from naphtha cracking in Asia and Europe, and from ethane cracking (using US shale-derived ethane) in the Americas. The growing US ethane export market has created a significant new trade flow for LEG carriers on the transatlantic and US-to-Asia corridors.

Other important petrochemical gases transported by LEG carriers include:

Propylene (C₃H₆)
Raw material for polypropylene plastics, automotive parts, textiles. Liquefied by pressure or refrigeration.
VCM — Vinyl Chloride Monomer
Raw material for PVC — pipes, windows, packaging films. Transported as a liquefied gas.
C₄/C₅ Fractions
Mixed hydrocarbon fractions from naphtha cracking. Used in rubber, adhesives and synthetic resins.

What is Ammonia (NH₃)?

Ammonia (NH₃) is one of the most widely produced chemical compounds globally — approximately 180 million tonnes per year. Traditionally used as a raw material for fertilisers and industrial chemicals, ammonia is now attracting intense attention as a zero-carbon fuel — it emits no CO₂ when burned, and serves as an efficient hydrogen carrier for the emerging green hydrogen economy. When transported by sea, ammonia is liquefied at –33°C at atmospheric pressure, or alternatively kept in pressurised tanks at ambient temperature. Most LPG carriers designed for semi-refrigerated service are inherently capable of carrying ammonia — making the existing LPG fleet a critical infrastructure asset for the energy transition. The anticipated growth in green ammonia production and trade is expected to be a major driver of future MGC and LGC fleet demand.

NH₃ Key Facts
Boiling point (1 atm)
–33°C
Annual production
~180M tonnes
CO₂ when burned
Zero
Transport method
Refrigerated or pressurised
Toxicity
Toxic — strict safety protocols
Most semi-refrigerated LPG/LEG carriers are inherently capable of carrying NH₃ — making the existing gas carrier fleet a critical bridge asset for the green hydrogen and ammonia economy. This dual capability significantly enhances fleet versatility and long-term commercial value.

How Do Gas Carriers Work? — Key Systems

Cargo Containment

Type A — Self-supporting prismatic tanks (fully refrigerated VLGCs). Require full secondary barrier.

Type C — Pressure vessel tanks (semi-refrigerated, pressurised). No secondary barrier required. Bilobe configuration common for LEG.

Reliquefaction System

Cargo boil-off vapour is compressed, condensed back to liquid and returned to the tank. Consists of multi-stage compressors, inter-coolers, condensers and oil separators. Critical for maintaining cargo temperature and pressure during the voyage. Failure during a VLGC voyage can cost $500K–$1.5M in cargo losses and off-hire.

Safety Systems

Gas carriers carry multiple redundant safety systems mandated by the IGC Code: gas detection systems, emergency shutdown (ESD) valves, pressure relief valves with documented setpoints, inert gas/nitrogen purging systems, water spray curtains, and dedicated cargo pump room ventilation. All systems require periodic class verification and certification.

What is LPG?

Liquefied Petroleum Gas (LPG) is a mixture of hydrocarbon gases — primarily propane (C₃H₈) and butane (C₄H₁₀) — that are gaseous at normal atmospheric temperature and pressure but can be liquefied by modest compression or refrigeration. LPG is derived from natural gas processing and crude oil refining, making it a co-product of the global oil and gas industry.

Physical Properties Comparison

PropertyPropane (C₃H₈)Butane (C₄H₁₀)
Molecular FormulaC₃H₈C₄H₁₀
Molecular Weight44.1 g/mol58.1 g/mol
Boiling Point (1 atm)–42.1°C–0.5°C
Vapour Pressure @ 20°C8.4 bar2.1 bar
Liquid Density @ 15°C508 kg/m³579 kg/m³
Calorific Value (lower)46.4 MJ/kg45.8 MJ/kg
Flammability Range (air)2.1% – 9.5%1.8% – 8.4%
Auto-ignition Temperature~470°C~365°C
Liquid/Vapour Expansion270:1233:1

Key Characteristics for Shipping

Heavier than air — critical safety consideration

Both propane and butane vapour are heavier than air (specific gravity 1.5–2.0). Leaks accumulate in low-lying areas — bilges, cargo pump rooms — creating explosive atmospheres. Ventilation design of gas carrier compartments must account for this fundamental property.

Cargo Temperature Management

Fully refrigerated VLGCs carry propane at –42°C and butane at –5°C at atmospheric pressure. Semi-refrigerated carriers operate at intermediate temperatures and elevated pressures. The choice of containment system determines cargo flexibility, operational cost and vessel value.

LPG vs LNG — Key Differences

LPG (propane/butane) boils at –42°C to –0.5°C. LNG (methane) boils at –162°C. This fundamental difference drives entirely different containment technology, cargo handling systems, regasification equipment and crew certification requirements.

LPG Production Sources

~60% from natural gas processing (associated and non-associated gas). ~40% from oil refinery by-products. Major producing regions: Middle East (Saudi Arabia, Qatar, UAE, Kuwait), US Gulf (fracking-driven growth), Russia (Yamal), North Africa, West Africa and North Sea.

320M
Tonnes/year world LPG production
98M
Tonnes/year LPG seaborne trade
~30%
Of world LPG trade shipped by VLGC
–42°C
Propane boiling point (cargo temp)
270:1
Liquid-to-vapour expansion ratio
~60%
LPG from natural gas processing

Gas Carrier Fleet Segments

Gas carriers are classified by cargo capacity and containment system type. Each system involves different trade-offs between cargo flexibility, capital cost and operational complexity.

VLGC LPG Carrier

VLGC — Very Large Gas Carrier

The workhorse of global LPG trade. Fully refrigerated, bilobe or lobe tanks. Dominant on deep-sea USG–Asia and MEG–Asia routes.

70,000–84,000 CBMFully refrigerated–42°C / –0.5°CBilobe tanksPDH trade
LGC LPG Carrier

LGC — Large Gas Carrier

Semi-refrigerated or fully refrigerated. Flexible cargo capability — LPG, ammonia, petrochemical gases. Regional and deep-sea routes.

40,000–60,000 CBMSemi/fully refrigeratedMulti-grade capableAmmonia ready
MGC LPG Carrier

MGC — Medium Gas Carrier

Semi-refrigerated vessels serving regional distribution, coastal trades and niche petrochemical cargoes. High operational flexibility.

15,000–40,000 CBMSemi-refrigeratedRegional tradesPetrochemicals
Pressurised LPG Carrier

Pressurised Gas Carrier

Cargo carried at ambient temperature under pressure. Simple technology, lower cost. Short-sea, coastal and river distribution trades.

500–5,000 CBMAmbient temperature~17 bar pressureCoastal / short-sea
LNG/FSRU LPG Carrier

LNG Carrier / FSRU

Methane cargo at –162°C. Membrane (GTT) or spherical (Moss) tanks. FSRU units serve as floating regasification terminals.

120,000–180,000 m³–162°CMembrane / MossFSRU capable
Coaster LPG Carrier

LPG Coaster / Small Pressurised

3,500–6,000 CBM. European coastal distribution, gas bunkering support, terminal feeder services. Highly active short-sea market.

3,500–6,000 CBMPressurisedEuropean tradesFeeder

Cargo Containment Systems

Type A — Self-supporting Prismatic

Traditional welded tank design. Used in fully refrigerated carriers. Requires full secondary barrier. Standard on most VLGCs.

Type B — Spherical (Kvaerner-Moss)

Spherical independent tanks. Partial secondary barrier required. Better fatigue resistance. Used in some LNG carriers and older VLGCs.

Type C — Pressure Vessels

Cylindrical or bi-lobe tanks. No secondary barrier required. Operate at elevated pressure. Standard on semi-refrigerated and pressurised carriers.

IGC Code & Key Regulations

Gas carriers are among the most heavily regulated vessel types in international shipping. The International Gas Carrier (IGC) Code forms the cornerstone of the regulatory framework, supported by SOLAS, MARPOL and IMO environmental conventions.

IMO / IGC

IGC Code (International Gas Carrier Code)

The primary international standard for gas carriers. Mandated under SOLAS Chapter VII. Covers ship design, construction, equipment and cargo operations for ships carrying liquefied gases in bulk. The revised 2016 IGC Code (effective 2016) introduced updated hazard assessments and risk-based design approaches. All gas carriers built after 1 July 1986 must comply.

SOLAS

SOLAS Chapter VII — Carriage of Dangerous Goods

Incorporates the IGC Code by reference. Establishes flag state obligations for certifying gas carriers. Requires the issuance of a Certificate of Fitness for the Carriage of Liquefied Gases in Bulk — the primary operating certificate for all gas carriers without which no commercial employment is possible.

MARPOL

MARPOL Annex II — Noxious Liquid Substances

Regulates the discharge of cargo residues from gas carriers. Ammonia and certain petrochemical gases carried on multi-gas vessels fall under Annex II requirements. Gas carriers also fall under MARPOL Annex VI for air pollution control, particularly SOx and NOx emissions regulations.

IMO EEXI / CII

EEXI & CII — Energy Efficiency Regulations

In force from January 2023. EEXI (Energy Efficiency Existing Ship Index) is a one-time technical certification. CII (Carbon Intensity Indicator) is an annual rating (A–E) that assesses a vessel's carbon intensity per nautical mile. Gas carriers face specific challenges as aging VLGCs face CII rating degradation, restricting charterer acceptance and TC renewal potential.

CLASS

Classification Society Requirements

Gas carriers must hold class maintained by a recognised organisation (LR, DNV, ClassNK, BV, ABS etc.). Class surveys for gas carriers are more complex than for conventional ships — tank inspections, cargo system function tests, safety system verification and in-service monitoring. 5-year Special Surveys for VLGCs are particularly intensive and expensive ($3–6M+).

IBC / BCH

IBC Code — Chemical Tankers

Semi-refrigerated vessels carrying LPG alongside petrochemical gases (propylene, butadiene, VCM) may require dual certification under both the IGC Code and the IBC Code. This dual-certification capability significantly expands a vessel's cargo flexibility and commercial value.

ISM / ISPS

ISM Code & ISPS

Gas carrier operators must hold a valid Document of Compliance (DOC) under the ISM Code and each vessel must carry a valid Safety Management Certificate (SMC). Gas carriers operating at ports handling hazardous cargoes are subject to strict ISPS port facility requirements.

STCW

STCW — Crew Certification for Gas Carriers

STCW 2010 Manila Amendments introduced mandatory specialised training and certification for officers serving on gas carriers. Officers must hold an Advanced Certificate in Gas Tanker Operations. This qualification requirement affects crew availability and cost, particularly for specialised gas carrier managers.

LPG Freight Market — Current Rates

Fearnleys Weekly Report — Week 10 · 4 March 2026. All rates in USD/month unless stated. Source: Fearnleys AS / Fearnpulse.

Data: Fearnleys Week 10 · March 2026
VLGC
84,000 CBM · Deep Sea
$2,370,000
–$10,000 w/w
USG → Japan / China
LGC
60,000 CBM
$1,650,000
+$180,000 w/w
MEG / USG regional
MGC
38,000 CBM
$1,150,000
+$100,000 w/w
Asia / Europe regional
HDY (Semi-ref) Ethylene
17–22,000 CBM
$1,100,000
+$50,000 w/w
Europe / Americas
HDY (Semi-ref) SR
20–22,000 CBM
$970,000
+$20,000 w/w
Regional trades
LPG Coaster Europe
3,500–5,000 CBM
$500,000
+$10,000 w/w
European short-sea

LPG/FOB Propane Prices · USD/Tonne · Week 10 2026

FOB North Sea / Argus$524/t+$30
Saudi Arabia / CP (Aramco)$545/t±$0
Mont Belvieu (US Gulf)$369.91/t+$63.20
Sonatrach / BethiouaMarket
Market Commentary — Week 10

EAST/WEST: The VLGC market showed continued firmness on USG–Asia corridors, supported by sustained PDH demand from Chinese petrochemical plants and an active freight enquiry programme out of the US Gulf. MEG supply routes remain partially disrupted following regional conflict escalation, redirecting cargo enquiries toward US and Algerian origins.

LGC and MGC segments improved week-on-week as regional distribution demand in Asia and Europe strengthened. Coaster rates in the European short-sea market remain supported by seasonal heating demand.

DISCLAIMER

Rate data sourced from Fearnleys Weekly Report / Fearnpulse Week 10, 4 March 2026. For live and current rates visit fearnpulse.com. DECKTANK does not guarantee accuracy of third-party data.

Global LPG Trade Flow & Key Demand Drivers

LPG seaborne trade is dominated by four key demand drivers: Asian PDH petrochemical production, Indian household fuel consumption, Middle Eastern refinery output and growing US export capacity driven by shale production.

Origin
US Gulf → China/Japan
Volume: ~35M t/yr · VLGC dominant route · PDH plant demand
Origin
Middle East → Asia
Volume: ~28M t/yr · Saudi Aramco CP price benchmark · Hormuz risk
Origin
Middle East → India
Volume: ~12M t/yr · Household LPG · +10–11% growth 2025
Origin
North Africa → Europe
Volume: ~8M t/yr · Sonatrach, Equinor · LGC/MGC fleet
Origin
US Gulf → Europe
Volume: ~6M t/yr · Growing with US export capacity · LGC trade
Origin
Asia → SE Asia Intra
Volume: ~10M t/yr · MGC/small LGC · Regional distribution

Key Structural Demand Drivers

China PDH Plants — Price-Inelastic LPG Buyers

Propane Dehydrogenation (PDH) plants convert propane into propylene for plastics manufacturing. China has over 30 operational PDH units with more under construction. These plants run to service debt obligations — making them price-inelastic, captive LPG buyers that sustain cargo demand even during LPG price spikes. PDH plants are the single most important structural demand driver for VLGC freight rates.

US Shale — Transforming the Export Landscape

US LPG production from Permian Basin and Marcellus shale gas processing has grown dramatically since 2015. Enterprise Products Partners (Houston), Targa Resources and Energy Transfer operate major export terminals. +300 kbd of new US export capacity came online in 2026, fundamentally shifting the global LPG trade balance toward the Atlantic basin.

India & South Asia — Household Fuel Growth

India's Pradhan Mantri Ujjwala Yojana programme has connected 90+ million households to LPG cooking fuel, driving structural import growth of 10–11% YoY in 2025. Indian Oil Corporation, Bharat Petroleum and Hindustan Petroleum are major importers. Indian LPG demand is relatively price-insensitive — government subsidies buffer end-consumer impact.

MEG / Hormuz Risk — Supply Disruption Factor

Approximately 28% of globally traded LPG transits the Strait of Hormuz from Gulf producers (Saudi Aramco, ADNOC, Kuwait). Regional geopolitical tensions create periodic supply disruptions that redirect cargo procurement toward Atlantic basin alternatives (US Gulf, North Africa), directly benefiting VLGC freight rates on non-MEG corridors.

Environmental Regulations for Gas Carriers

The IMO's Carbon Intensity Indicator (CII) regulation, in force from January 2023, is reshaping the commercial landscape for aging gas carriers — affecting charterer acceptance, TC renewal prospects and vessel values.

CII Rating Scale

A
B
C
D
E
SuperiorGoodModerateMinor deficiencyBelow standard

Annual CII Rating

Each vessel receives an annual CII rating based on CO₂ emitted per deadweight-tonne-nautical-mile. Rating is verified by class and reported to flag state. Required to improve by ~2% per year through 2030.

D & E Ratings — Commercial Consequences

Vessels rated D for three consecutive years or E for one year must submit a corrective action plan. Major oil company charterers increasingly reject D/E rated vessels. TC renewal becomes difficult and rates compressed.

VLGC Age & CII Exposure

Vessels aged 23–27 years face CII rating degradation as engine efficiency declines and optimisation options narrow. This is a key risk factor in acquisition viability studies for second-hand gas carriers.

Decarbonisation Pathway Options

Speed Reduction (Slow Steaming)

Most cost-effective near-term measure. Reducing service speed from 16 to 13 knots can improve CII rating by 1–2 bands. However, slow steaming reduces effective fleet supply and may conflict with TC performance obligations if minimum speed clauses apply.

Main Engine Power Limitation (EEXI / EPL)

EEXI compliance often requires an Engine Power Limitation device reducing MCR by 10–30%. This permanently restricts maximum service speed and must be factored into voyage performance calculations and TC negotiations.

LPG Fuel — The Gas Carrier Advantage

Modern VLGCs can be retrofitted to burn LPG cargo as fuel (propulsion fuel — LPG ready). Several major VLGC operators have pioneered this conversion. LPG propulsion reduces CO₂ by ~15–20% vs HFO and eliminates SOx. Gas carriers using their own cargo as fuel have a natural decarbonisation advantage.

NH₃ and Future Fuels

Ammonia (NH₃) is a leading candidate for zero-carbon marine fuel. Gas carriers — particularly those already handling ammonia cargo — are well positioned for dual-fuel ammonia propulsion. MAN and WinGD have announced ammonia-ready 2-stroke engines targeting gas carrier newbuilding orders.

Time Charter & Commercial Terms Explained

Understanding the commercial structure of gas carrier employment is essential for owners, investors and operators. Key terms, common charter structures and market conventions are explained below.

Charter Party Types

TC

Time Charter

Owner provides vessel + crew. Charterer pays hire rate (USD/day or USD/month) and covers voyage costs (bunkers, port costs). Fixed duration (6 months to 5 years). Most common employment type for VLGCs and LGCs. TC hire rate is the primary revenue driver in all acquisition models.

VC / SPOT

Voyage Charter (Spot)

Owner provides vessel + crew + covers voyage costs. Charterer pays freight rate per tonne of cargo. Short-duration, single-voyage employment. VLGC spot rates quoted as USD/month equivalent for benchmarking. Higher risk, higher potential reward vs TC employment.

BB

Bareboat Charter

Owner provides vessel only — no crew, no management. Charterer is responsible for crew, insurance, maintenance and all vessel costs. Used for financing structures (Chinese banks, COSCO, leasing houses). BB hire is essentially debt-equivalent financing.

COA

Contract of Affreightment

Agreement to carry a defined volume of cargo over a specified period using vessels of the owner's choice. Common for producers and traders with consistent cargo programmes. Provides volume certainty without vessel-specific commitment.

Key Commercial Terms

HIRE RATE

TC Hire Rate

The daily or monthly rate paid by charterer to owner. For VLGCs: typically USD 1.5M–2.5M/month for 84,000 CBM vessels. 72,000 CBM vessels trade at a discount reflecting lower cargo capacity. Rate is the single most important variable in VLGC investment economics.

REDELIVERY

Redelivery Range & Duration

TC contracts specify a redelivery window (±30–45 days around the contracted end date). The redelivery position determines vessel availability for the owner's next fixture. Managing redelivery position against market rate trends is a key commercial skill.

OFF-HIRE

Off-Hire

Periods when the vessel is not at full charterer's disposal — drydocking, breakdowns, port delays beyond a defined threshold. Off-hire periods suspend hire payment. Charterers negotiate tight off-hire clauses; owners seek generous allowed off-hire provisions.

BL1+2

BLPG Routes (Freight Benchmarks)

BLPG1: Ras Tanura → Chiba (MEG→Japan). BLPG2: Houston → Chiba (USG→Japan). BLPG3: Houston → Flushing (USG→Europe). These Baltic Exchange LPG routes are the primary TCE benchmarks for VLGC fixture analysis and freight derivatives hedging.

TCE

Time Charter Equivalent

TCE = (Voyage revenue – voyage costs) / voyage days. Converts voyage charter freight into a daily rate equivalent for comparison with TC hire rates. TCE is the standard metric for comparing vessel earnings across charter types and routes.

LPG Vessel Operating Cost Structure

Understanding the OPEX structure of a gas carrier is essential for evaluating acquisition economics, setting charter hire targets and assessing third-party management proposals. Costs below are representative of a modern VLGC (72,000–84,000 CBM) in 2026.

VLGC OPEX Breakdown — Representative 2026

Crew — wages, provisions, travel, medicals~52%
Maintenance & Repairs~16%
Stores, Lubricants & Freights~14%
Miscellaneous & Management~10%
Insurance (H&M, P&I, War Risk)~8%
Total OPEX — VLGC (72k CBM, 2026) ~$2.8M–$3.2M/yr
= $7,500–$8,800/day

Key OPEX Cost Drivers

Crew Costs — The Dominant Variable

Officers and crew for a VLGC: typically 24–26 persons. Gas-qualified officers (Advanced Gas Tanker Certificate) command a significant premium — 15–25% above conventional tanker officers. Crew nationalities (Filipino, Indian, Greek, East European) significantly affect cost. Crew costs have inflated 6–9% annually since 2022.

Special Survey — The Major Cost Event

5-year Special Surveys for VLGCs involve full tank entry, cargo system overhaul, main engine inspection and renewal of class certificates. Total cost: $3–6M+ for aging vessels. Survey scope and duration increase significantly after the 20-year mark. Unbudgeted Special Survey costs are the most common financial shock in VLGC ownership.

OPEX Escalation — Aging Vessel Factor

Annual OPEX for a VLGC typically escalates 5–8% per year as the vessel ages beyond 20 years. At age 25–27, maintenance and repair costs can increase by 30–40% vs. the Year 1 base. Any acquisition financial model must include a realistic OPEX escalation schedule — a flat OPEX assumption through a 5-year hold significantly overstates projected returns.

Insurance Benchmarks

H&M (Hull & Machinery): typically 0.35–0.5% of vessel value per year, increasing with age. P&I (Protection & Indemnity): standard IG Club rates plus gas surcharges. War Risk insurance has escalated significantly with MEG regional tensions — currently adding $150,000–$400,000/yr for vessels transiting Hormuz-adjacent waters.

LPG carriers Ship-to-Ship operation

30–50 LPG Market Players Served Per Year

Our advisory network spans the full LPG, LEG and NH3 value chain — producers, traders, shipowners, charterers, brokers and financial institutions worldwide.

LPG Fleet

The companies below represent the LPG, LEG and NH3 market players that form the core of the global gas carrier sector — major oil companies, national oil companies, international traders, shipowners, gas distributors, brokers and financial institutions. This reflects our team's deep market knowledge and long-standing industry relationships.

⛽ Major Oil Companies 🚢 Shipping Companies 📦 Traders & Distributors 🏭 Producers & NOCs 🔍 Brokers & Analysts
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If you represent any of these companies or operate in the LPG market and would like to discuss how DECKTANK can support your commercial or technical operations, we'd be glad to hear from you.

LPG carrier broadside at anchor

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Whether you are evaluating a VLGC acquisition, renegotiating a time charter, reviewing your gas carrier OPEX, investigating a propane cargo claim or commissioning LPG market research — we are here to help. Every enquiry is handled directly by our team and treated in strict confidence.

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Response Time
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Strict NDA available on request
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Corporate Profile

An independent LPG · LEG · NH3 maritime solutions firm — built by gas professionals, for the gas carrier industry.

2022
Established
37+
Years LPG · LEG · NH3 experience
9
Specialist service areas
100%
Independent — no conflicts of interest

DECKTANK Maritime Solutions

DECKTANK is an independent maritime solutions firm specialising exclusively in LPG, LEG and NH3 gas carrier advisory. Founded and led by a team of gas professionals with over 37 years of combined hands-on experience across the full gas carrier lifecycle — from sea service and newbuilding supervision to fleet technical management, sale and purchase, chartering advisory and cargo claims — DECKTANK delivers the depth of expertise that first-generation LPG owners, investors, charterers and insurers require but rarely find in a generalist maritime consultancy.

Our firm operates on a strictly independent basis. We hold no ownership interest in any vessel, carry no freight commission obligations, maintain no lending relationships and represent no cargo interests. Every mandate we accept is executed with a single objective: the best commercial and technical outcome for our client.

DECKTANK serves 30–50 LPG market participants per year across the full value chain — producers, traders, shipowners, time charterers, financial institutions, P&I Clubs, Hull & Machinery underwriters and legal firms active in the gas carrier sector. All client relationships and mandate details are held in strict confidence under NDA.

Corporate Data
Company Name DECKTANK Maritime Solutions
Established 2022
Headquarters Athens, Greece
Operations Global — LPG trading corridors
Specialism LPG · LEG · NH3
Service Areas 9 specialist disciplines
Clients per year 30–50 market players
Independence 100% — no conflicts of interest
Confidentiality Strict NDA on all mandates
Website www.decktank.com
Email info@decktank.com
nio@decktank.com

What We Stand For

Independence

We hold no ownership interest in any vessel. We carry no freight commissions. We maintain no lending or banking relationships. Our advice is governed by one interest only — yours. In a sector where conflicts of interest are the norm, true independence is our most valuable asset.

Technical Depth

LPG, LEG and NH3 carrier advisory requires a level of technical knowledge that goes beyond commercial shipping experience. Our team has sailed on gas carriers, supervised newbuilding programmes at Korean and Chinese shipyards, managed reliquefaction systems, coordinated Special Surveys and investigated cargo claims. We advise from the inside out.

Discretion

All mandates are executed under strict non-disclosure. We do not publish client names, transaction details or mandate outcomes. The maritime advisory sector operates on trust — and we protect that trust rigorously. Our clients can engage us knowing that their commercial positions, acquisition strategies and operational challenges remain entirely confidential.

Built on Hands-On Gas Carrier Experience

LPG carrier hull under construction at Korean shipyard
From keel to delivery
LPG carrier hull construction — Korean shipyard — supervised by our team

Our team's expertise spans every stage of the gas carrier lifecycle — from keel-laying in Korean and Chinese yards to cargo discharge at Asian PDH terminals. This breadth of experience is what allows us to deliver advisory that is technically precise, commercially relevant and operationally grounded.

Sea Service — Chief Engineer Level

LPG carrier sea service from marine engineer to Chief Engineer rank — hands-on experience with propane/butane cargo systems, reliquefaction plants, cargo compressors and IGC Code operations in real voyage conditions.

Newbuilding Supervision — Korea & China

More than 60 hulls supervised over 20 years at leading Korean and Chinese shipyards — including fully refrigerated VLGC, LGC, LEG bilobe Type-C, semi-refrigerated LPG/NH3 and pressurised gas carriers.

Fleet Technical Management — CTO Level

Senior technical management of LPG/LEG/NH3 fleets at Managing Director and CTO level — OPEX control, Special Survey management, class compliance, 96% fleet mobilisation performance and large-scale newbuilding programme oversight.

S&P Advisory & Acquisition Support

Full lifecycle LPG carrier sale and purchase advisory — vessel selection, physical assessment, MoA and charter party review, LPG heel negotiation and delivery attendance. Independent representation for buyers and sellers with no brokerage conflict.

Cargo Claims & Survey — P&I / H&M

LPG cargo damage surveys, contamination investigations and claim evaluation for international Hull Clubs, P&I Clubs and underwriters. Arbitration-standard technical reports covering the full spectrum of gas carrier cargo and structural incidents.

Market Research & Commercial Intelligence

VLGC rate forecasting, PDH demand modelling, LPG orderbook analysis, BLPG route TCE studies and investment feasibility reports for owners, investors and financial institutions active in the gas carrier sector.

Team Qualifications & Affiliations
MBA — Oil & Gas Management, Edinburgh Business School (UK)
BSc Marine Engineering, University of Southampton (UK)
Class A Marine Engineer — Chief Engineer Certificate (Greece)
Advanced LPG/LNG Operations — KESEN National Marine Academy (Greece)
Gas Carrier Advanced Handling & Operations — Warsash Nautical Institute (UK)
LPG/LNG Handling & Installations — TGE Marine (Germany)
Advance Vetting Inspector — Bureau Veritas (Greece)
Category-1 Thermographer — ITC-Teledyne FLIR (Sweden)
Technical Committee Member — Major International Classification Societies
External Technical Consultant — International P&I Club
Member — Greek Association of Technical Consultants & Maritime Experts
Tanker Construction Inspection — DNV-GL (Greece)

Our Client Base

DECKTANK serves a focused range of 30–50 LPG market participants per year across the full value chain. All client relationships are confidential.

Shipowners & Investors

VLGC, LGC, MGC and pressurised gas carrier owners — first-time LPG buyers and established fleet operators seeking independent advisory.

📦

Traders & Charterers

LPG, LEG and NH3 traders and time charterers requiring pre-chartering technical assessments, cargo system inspections and charter party advisory.

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Banks & Financial Institutions

Maritime lenders and investment funds requiring independent technical and market due diligence on LPG carrier acquisitions and fleet financings.

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P&I Clubs, Insurers & Legal

Hull & Machinery underwriters, P&I Clubs and maritime legal firms requiring expert technical investigation and arbitration-standard reporting on LPG cargo claims.

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Tell us about your LPG carrier project, acquisition or operational challenge.