OSSA LNG
Carrier library
LNG-Fuelled VesselMicro-scale / ISO LNGEducational data

LNG-fuelled vessel (gas as marine fuel)

An educational profile of ships that burn LNG rather than carry it.

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Class overview

An LNG-fuelled vessel uses LNG as fuel for its own propulsion and auxiliary systems. It is not a cargo vessel profile: containers, ferries, car carriers, tankers and offshore units all appear in this group. Fuel storage usually relies on self-supporting Type C tanks, and design falls under the IGF Code framework. Tank size, bunkering interval and machinery configuration are entirely project-specific.

Classification

Operational role
LNG-Fuelled Vessel
Containment system
Type C Pressure Tanks · Bi-Lobe Type C Tanks
Tank geometry
Self-supporting Type C fuel tanks, cylindrical or bi-lobe
Capacity class
Micro-scale / ISO LNG — indicative: below approximately 1,000 m³
Propulsion options
X-DF · ME-GI · DFDE / TFDE
BOG management
BOG as fuel

Key systems

Fuel containmentSelf-supporting Type C tanks with pressure relief and insulation sized per project
Fuel supplyGas valve unit and supply system matched to engine type and gas pressure
SafetyGas detection, double-walled piping and emergency shutdown arrangements

Operational environment

Any vessel segment using LNG as fuel — container ships, ferries, tankers, car carriers and more.

Safety and operational considerations

  • Fuel storage, bunkering arrangements and gas supply systems fall under the IGF Code framework.
  • Bunkering operations require compatibility with the supplying vessel, truck or terminal.
  • Gas-safe machinery spaces and detection arrangements are core to the design.

Strengths

  • Bunkering can use ship-to-ship, truck-to-ship or terminal-to-ship methods
  • Fuel vapour is normally consumed by the vessel's own machinery
  • Type C fuel tanks draw on established pressure-vessel practice

Considerations

  • Fuel tanks occupy space that would otherwise carry cargo or passengers
  • Bunkering availability differs sharply between ports and regions
  • Gas-safe machinery arrangements and crew training requirements follow the IGF Code

Technical information

Status
Educational overview — editorial review required
Seeded educational summary awaiting editorial and technical review.
Last reviewed
15 September 2026
Source status
Sources pending editorial review.

Technical parameters are indicative and may vary by vessel design, generation, shipyard, operator and intended service.