Patent ID: 8375876

Claim:
A marine vessel, comprising: a main deck; one or more container cell guides disposed above the main deck; one or more ISO intermodal LNG tanks disposed in the container cell guides to form one or more stacking levels of intermodal LNG tanks; a liquid transfer system comprising a liquid transfer system header for each stacking level of the intermodal LNG tanks, wherein each one of the intermodal LNG tanks in a stacking level of intermodal LNG tanks is individually coupled to the liquid transfer system header for that stacking level of intermodal LNG tanks to transfer LNG to and from the intermodal LNG tanks; a vapor system comprising a vapor system header for each stacking level of the intermodal LNG tanks, wherein each one of the intermodal LNG tanks in a stacking level of intermodal LNG tanks is individually coupled to the vapor system header for that stacking level of intermodal LNG tanks to transfer boil-off as from the intermodal LNG tanks; and a boil-off gas control system coupled to the vapor system header to maintain vapor pressure in each one of the intermodal LNG tanks at a desired level.