On November 3, the liquefied natural gas (LNG) carrier Diamond Gas Metropolis, owned by NYK and the Mitsubishi Corporation (MC),* was delivered. The vessel was built at Hyundai Samho Heavy Industries.
The NYK Group will be responsible for ship management, and the new ship will transport LNG from the U.S. state of Louisiana for the Cameron LNG project, as well as from other locations around the world, under a long-term time-charter contract with Diamond Gas International Pte. Ltd.,** a wholly-owned subsidiary of MC. NYK and MC both have a stake in the Cameron LNG project.
Diamond Gas Metropolis is equipped with a WinGD-made dual-fuel slow-speed diesel engine (i.e., X-DF diesel engine)*** that has superior fuel-consumption efficiency and can operate on marine gas oil or boil off gas stored in the cargo tank. The vessel will also feature a re-liquefaction system that can use re-liquefied excess boil-off gas and return it to the cargo tank.
The cargo tank will be a 174,000 cubic meter capacity membrane-type tank that will make use of advanced insulating materials**** to suppress the boil-off rate (percentage of gas volume that vaporizes during navigation) in the cargo tank and realize superior efficiency and economical LNG transportation.
In accordance with its medium-term management plan “Staying Ahead 2022 with Digitalization and Green,” the NYK Group seeks to secure stable freight rates through long-term contracts and continue its efforts to contribute to a stable supply of LNG as environment-friendly energy.
Outline of Vessel
- Length overall: about 297.00 meters
- Breadth: about 46.40 meters
- Gross tonnage: 117,564 tons
- Main engine: X-DF engine
- Cargo tank capacity: about 174,000 cubic meters
- Shipbuilder: Hyundai Samho Heavy Industries Co. Ltd.
- Flag state: Bahamas
* Equally owned by NYK and MC through Diamond LNG Shipping 4 Pte. Ltd., a company established for LNG vessel ownership and LNG transportation
** A wholly owned subsidiary of MC located in Singapore
*** A low-speed diesel engine having excellent fuel consumption efficiency
**** A Gaztransport & Technigaz (GTT) made tank having the GTT Mark III flex cargo containment system, which has insulating materials to suppress the boil-off rate
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