Heating system for liquefied gas fuel supply apparatus and fuel supply appartus for liquefied gas engine

A heating system for a liquefied gas fuel supply apparatus that vaporizes liquefied gas fuel by a vaporizer to supply the vaporized gas fuel to an internal-combustion engine, the heating system comprising:

• a circulation circuit that circulates heating medium between the vaporizer and an inside of the internal-combustion engine;
• and
• a heating insulating container that stores the heating medium, the heat insulating container being disposed in the circulation circuit,
• wherein the circulation circuit includes:
• a first circulation circuit that circulates the heating medium between the vaporizer and the heat insulating container, and not through the inside of the internal combustion engine;
• and
• a second circulation circuit that circulates the heating medium between the heat insulating container and the inside of the internal combustion engine, and not through the vaporizer.