Patent ID: 8043136

Claim:
A marine vessel comprising: a storage container for liquefied gas, a propulsion system utilizing liquefied gas as fuel, a fuel feeding system for receiving fuel in liquid form from the storage container and supplying fuel to the propulsion system, a cooling medium circuit in which a non-toxic fluid circulates, an intermediate flow circuit in which a refrigerant circulates, a first heat exchanger for transferring heat from the non-toxic fluid circulating in the cooling medium circuit to the refrigerant circulating in to the intermediate flow circuit, a second heat exchanger for transferring heat to the refrigerant circulating in the intermediate flow circuit from a low temperature heat source, and a third heat exchanger for transferring heat from the refrigerant circulating in the intermediate circuit to fuel in the fuel feeding system, whereby fuel received in liquid form from the storage container is heated and converted to gaseous form and the fuel feeding system supplies the fuel in gaseous form to the propulsion system.