Mitsubishi Shipbuilding has secured supplier pre-approval from WinGD for two components of its MAmmoSS ammonia fuel handling system.

The approval covers the fuel valve unit (FVU) and ammonia injector cooling water system (AICWS), which are designed to safely manage ammonia supply and delivery during vessel operations. the firm said in a press release earlier this week. 

The FVU controls the flow of ammonia to the engine, while the AICWS helps cool the fuel injection valves and remove ammonia remaining in the fuel lines.

Both components are designed for use with WinGD's ammonia dual-fuel engines and can be integrated into Mitsubishi Shipbuilding's wider MAmmoSS system for centralised control.

The approval follows a memorandum of understanding signed by the companies in 2023 and the completion of the system's basic design in 2024.