South Korea’s Daewoo Shipbuilding & Marine Engineering (DSME) shipyard has launched the first of Teekay’s nine M-type, electronically controlled, gas-injection (MEGI) LNG vessels.
The ship, named Creole Spirit, is expected to enter service early next year under a charter contract with Cheniere.
The new-build will feature MAN Diesel’s two-stroke engine technology, the MEGI propulsion system, to offer better fuel-efficiency and lower emission levels than other LNG-powered vessels.
According to Teekay, the company is the first ship owner to order a MEGI-propelled LNG carrier.
The MEGI engine consists of the burckhardt compressor and the partial reliquefaction system, where a compressor will take the boil-off gas from the cargo tanks and compress it to 300bar for direct injection into the MEGI engine.
In addition, the partial reliquefaction process will take the unused gas from the engine and return it to a liquid state. Gas will be put back into the cargo tank by dropping the excess gas pressure from 300bar to 3bar in a pair of Joule Thomson Valves.
MEGI vessels are estimated to consume up to 100t of fuel a day, while efficient, dual-fuel, diesel-electric (DFDE) propulsion systems use 125t to 130t.
DSME is expected to install the cargo containment system capable of transporting 174,000m³ of LNG over the next eight months. Following this, the firm will conduct the necessary tests and trials for the vessel and equipment.
Image: Teekay’s MEGI-powered LNG vessel, Creole Spirit. Photo: courtesy of Teekay Corporation.