French membrane-type cargo containment system designer GTT has more than doubled its orderbook for 2021, netting contracts for 25 LNG bunker tanks in the first nine months of the year, with the number of dual-fuel deals mounting.

In a third-quarter results briefing, chairman and chief executive Philippe Berterottiere said the 25 orders came on top of 14 existing LNG vessel fuel tanks, seven of which have been delivered, leaving the company with 32 tank designs on order.