Gaztransport & Technigaz System / Package

LNG as Fuel

Name: LNG as Fuel
Brand: GTT

GTT

GTT membrane tank technology for LNG fuel storage on ships, offering flexible tank geometry, low weight, optimised volume and a low guaranteed boil-off rate.

Description

LNG as Fuel covers GTT's membrane containment technology applied to LNG fuel tanks for ship propulsion, supporting projects from pre-project stage through construction.

Key features

Flexible tank geometry – saves deadweight and gains volume
Low weight – increased deadweight gain and autonomy
Highly optimised tank volume – extended autonomy and flexibility
Low guaranteed boil-off rate – pressure rise over 30 days with minimum consumption
Low heat capacity – rapid cooling of tanks for energy efficiency

Specifications

Pre-project	Project and construction

Specificities of membrane tank	Advantages of membrane tank	Gain in
Flexible tank geometry	Saving DWT	Volume
Low weight	Increased deadweight gain	Autonomy
Highly optimised tank volume	Extended autonomy	Flexibility
Low guaranteed boil-off rate	Pressure rise > 30 jours with minimum consumption	Security
Low heat capacity	Rapid cooling of tanks	Energy efficiency

Stacked GRIDCOOLER® Keel Cooler

Two-tier (stacked or double-stacked) copper-nickel keel cooler that delivers more heat rejection in a smaller hull footprint — ideal for large engines and repowers.

Equipment

Caterpillar Marine

Cat C4.4 Marine Generator Set

Inline 4-cylinder 4.4 L diesel marine genset, 36-99 ekW at 1500/1800 rpm, with heat exchanger, radiator or keel cooling, open or enclosed, 12 or 24 V; class-approved packages available.