MOL advances gas tanker fueled by ammonia Ship’s crew

Japanese shipowner Mitsui OSK Lines (MOL) and compatriots Tsuneishi Shipbuilding and Mitsui E&S Shipbuilding have completed the project launched last year to develop an ammonia-powered gas tanker.

The 40,000 cubic meter vessel, capable of transporting ammonia and liquefied petroleum gas (LPG), has received Approvals of Principle (AiPs) from ClassNK and Lloyd’s Register.

“This is the first case ever in which two AiP classes, ClassNK and Lloyd’s, have been issued,” MOL noted.

The vessel, which uses part of the ammonia carried as cargo as fuel to achieve net-zero CO2 emissions while underway, will be equipped with a Mitsui-MAN B&W Type S60 two-stroke, dual-fuel, ammonia main engine under development.

There are currently no international regulations governing the use of ammonia as a marine fuel and the awarded AiPs covered the risk assessment of the fuel from multiple perspectives and recognized the safety of the ship’s basic design.

The project is progressing with the aim of launching the ship in 2026. MOL continues to be heavily involved in the development of ammonia-powered vessels as the fuel gains traction as one of the potential zero-carbon options for shipping. Earlier this year it secured another AiP to design a 210,000 dwt ammonia fueled Newcastlemax with trading house Mitsui & Co and Mitsubishi Shipbuilding.

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