LNG bunker vessel

An LNG bunker vessel is a small gas carrier built to transfer liquefied natural gas as fuel to LNG-fueled merchant ships, ship to ship, usually while the receiver is alongside or at anchor. Capacities run roughly 1,000 to 20,000 cubic meters, far below a trading LNG carrier, because the job is fueling, not line-haul cargo. The vessel carries flexible cryogenic hoses or hard arms, vapor-return lines, and custody-transfer metering, and manages boil-off gas during the transfer. Examples serve bunkering hubs such as Rotterdam and Singapore. The ship is certified to the IMO IGC Code, and the bunkering operation follows the IGF Code requirements that apply to the fuel-receiving ship.