Small-Scale LNG CarrierSmall-scaleEducational data

Small-scale LNG carrier with Type C tanks

Regional distribution into shallow, coastal, and island markets.

Class overview

Small-scale carriers break large cargoes into parcels that regional terminals can actually receive. Most use Type C pressure tanks: self-supporting pressure vessels that tolerate pressure build-up during idle periods without venting, which suits irregular schedules and long waiting times. Configurations vary widely between projects.

Classification

Operational role: Small-Scale LNG Carrier
Containment system: Type C Pressure Tanks · Cylindrical Type C Tanks · Bi-Lobe Type C Tanks
Tank geometry: Cylindrical or bi-lobe self-supporting pressure vessels
Capacity class: Small-scale — indicative: below approximately 30,000 m³
Propulsion options: DFDE / TFDE
BOG management: BOG as fuel · Reliquefaction

Key systems

ContainmentSelf-supporting Type C pressure vessels requiring no secondary barrier

Cargo handlingDeck-mounted manifolds compatible with small jetties

FlexibilityFrequently equipped for both distribution and bunkering duty

Operational environment

Regional and coastal distribution with frequent port calls and shorter voyages.

Safety and operational considerations

Type C tanks are self-supporting pressure vessels; design pressure and vapour behaviour are project-specific.
Frequent transfer operations place emphasis on connection procedures and crew training.
Small terminals may have limited infrastructure, so equipment compatibility is checked per call.

Strengths

Shallow draft opens terminals large carriers cannot reach
Type C tanks tolerate pressure build-up during idle periods without venting
No secondary barrier required, simplifying construction in smaller hulls
Cargo parcels sized to regional demand and storage

Considerations

Pressure vessels use hull volume less efficiently than membrane systems
Higher cost per cubic metre delivered than ocean-going carriers
Design pressure, capacity and boil-off behaviour vary significantly between vessels

Specifications

Indicative capacity: 1K–30K m³
Typical application: Regional distribution to island, coastal and industrial customers
Hull-space efficiency: Lower than membrane — cylindrical pressure vessels use hull volume differently
Infrastructure requirements: Small jetties and shallow berths; modest shore storage and loading rates
Boil-off rate (indicative): 0.25% per day
Service speed (indicative): 15 knots
Length overall (indicative): 150 m
Beam (indicative): 24 m
Draft (indicative): 7 m
First in service: 2003

Typical deployment

Northwest Europe coastal feeder
Caribbean island supply
Southeast Asia archipelago runs

Learning journey

Tech: type c Tech: lng bunkering technology Tech: cryogenic insulation small scale lng type c tank pressure vessel lng bunkering Article: lng bunkering small scale

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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.