A fuel storage and distribution system for a gas-fuelled sea-going vessel, comprising: - a thermally insulated gas tank for storing liquefied gas fuel and - a tank room, - an external heat source circuit comprising at least one of the following: a part of an engine cooling circuit reaching into said tank room, a part of a steam generation circuit reaching into said tank room, or a part of a thermal oil circuit reaching into said tank room, wherein the fuel storage and distribution system further comprises - a local heat transfer circuit in the tank room, which local heat transfer circuit comprises a local heat transfer re-boiler, and a local heat transfer condenser in fluid connection with said local heat transfer re-boiler, configured to extract heat from an external heat source circuit, which external heat source circuit constitutes a hot element within local heat transfer re-boiler, which hot element is a part that during use donates heat to a transfer medium of said local heat transfer circuit, causing it to evaporate within said local heat transfer re-boiler, which local heat transfer condenser extends at least partly into said gas tank, - the tank room constitutes a gastight space enclosing tank connections and valves associated with them, and - the local heat transfer circuit is configured to extract heat from said external heat source circuit inside said tank room, - as a part of said local heat transfer circuit a heating arrangement configured to heat liquefied gas fuel, which is stored in said gas tank, for increasing pressure inside said gas tank indirectly through a pressure build-up heat transfer circuit that constitutes a closed loop that allows fluid heating medium to circulate between the tank room and the gas tank, wherein a part of said pressure build-up heat transfer circuit constitutes a cold element, which is a part that during use receives heat from the transfer medium causing it to condense, within said local heat transfer condenser, or directly by making heated, fluid transfer medium of said local heat transfer circuit donate heat to said liquefied gas fuel, and - as a part of said local heat transfer circuit a main gas evaporator for evaporating liquefied gas fuel drawn from said gas tank for delivery to an engine of the sea-going vessel. - a thermally insulated gas tank for storing liquefied gas fuel and - a tank room, - an external heat source circuit comprising at least one of the following: a part of an engine cooling circuit reaching into said tank room, a part of a steam generation circuit reaching into said tank room, or a part of a thermal oil circuit reaching into said tank room, - a local heat transfer circuit in the tank room, which local heat transfer circuit comprises a local heat transfer re-boiler, and a local heat transfer condenser in fluid connection with said local heat transfer re-boiler, configured to extract heat from an external heat source circuit, which external heat source circuit constitutes a hot element within local heat transfer re-boiler, which hot element is a part that during use donates heat to a transfer medium of said local heat transfer circuit, causing it to evaporate within said local heat transfer re-boiler, which local heat transfer condenser extends at least partly into said gas tank, - the tank room constitutes a gastight space enclosing tank connections and valves associated with them, and - the local heat transfer circuit is configured to extract heat from said external heat source circuit inside said tank room, - as a part of said local heat transfer circuit a heating arrangement configured to heat liquefied gas fuel, which is stored in said gas tank, for increasing pressure inside said gas tank indirectly through a pressure build-up heat transfer circuit that constitutes a closed loop that allows fluid heating medium to circulate between the tank room and the gas tank, wherein a part of said pressure build-up heat transfer circuit constitutes a cold element, which is a part that during use receives heat from the transfer medium causing it to condense, within said local heat transfer condenser, or directly by making heated, fluid transfer medium of said local heat transfer circuit donate heat to said liquefied gas fuel, and - as a part of said local heat transfer circuit a main gas evaporator for evaporating liquefied gas fuel drawn from said gas tank for delivery to an engine of the sea-going vessel.