GasLog Sydney (IMO 9626273) — LNG carrier, 155k m³

Specification

As GEM reports it: containment “membrane”, propulsion “DFDE”.

Samsung Heavy IndustriesSouth Korea · delivered 2013

Membrane (system not specified)Membrane

Stakes exactly as GEM reports them for this vessel.

Vessels from the same yard, delivered the same year, with the same cargo capacity to the nearest 1,000 m³. A shared design is likely but not certain.

Vessel	IMO	Status	Capacity	Containment	Propulsion
GasLog Santiago	9600530	Operating	155,000	Membrane (system not specified)	DFDE (dual-fuel diesel electric)
GasLog Seattle	9634086	Operating	155,000	Membrane (system not specified)	DFDE (dual-fuel diesel electric)
GasLog Shanghai	9600528	Operating	155,000	Membrane (system not specified)	DFDE (dual-fuel diesel electric)
GasLog Skagen	9626285	Operating	155,000	Membrane (system not specified)	DFDE (dual-fuel diesel electric)

Background on the technology and the terms used on this page.

LNG carrier anatomy
An LNG carrier is a ship built around insulated cargo tanks that hold liquefied gas at minus 162 degrees, with an engine able to burn the cargo vapour that inevitably boils off during the voyage.
Membrane versus Moss tanks
Cargo containment is the system that holds LNG at minus 162 degrees inside a ship, and it comes in two families: membranes, which are thin barriers supported by the hull, and free-standing tanks, which carry their own load.
Propulsion II: DFDE and TFDE, the dual-fuel era
Dual-fuel diesel electric propulsion uses medium-speed engines burning either boil-off gas or liquid fuel to generate electricity, which drives electric propulsion motors rather than a directly coupled shaft.
Ship classes: conventional, Q-Flex, Q-Max and small-scale
LNG carriers fall into recognised size classes running from small-scale vessels under 30,000 cubic metres, through the 174,000 cubic metre conventional standard, to the 266,000 cubic metre Q-Max ships built for Qatar.