Three firms have signed a memorandum of understanding to build two platform supply vessels (PSV) that will run on ammonia.
Ammonia fuel technologist Amogy, consultants Green Ships and Bourbon Horizon have made the two-ship deal with an option on a third vessel, according to a statement on Amogy's website.
"For smaller ships, such as a typical PSV size, liquid ammonia is mainly considered in combination with fuel cells and large-size batteries," said Amogy Norway managing director Christian Berg.
"Amogy offers the first available powerpack that includes a cracking technology converting liquid ammonia to hydrogen gas for direct integration into the fuel cells," Berg added.
While making inroads into the marine technology field, there has yet to be a firm order for an ammonia-fuelled ocean-going vessel.
Class society DNV tracks ship orders for ships using alternative fuels including ammonia. Principal consultant Martin Wold told Ship & Bunker that only firm orders are counted not MoUs, LOIs or options. However, in his latest order update, Wold noted that interest in ammonia is growing and it is only a matter of time before that first order is made.