| abstract |
A liquid hydrogen carrier includes a hull, a tank mounted on the hull, a tank including a tank body for storing liquid hydrogen, and a heat insulating layer covering the tank body, and a tank cover forming a holding space for accommodating the tank together with the hull; A nitrogen supply device for supplying nitrogen to the space, a seawater supply device for supplying seawater to the holding space, a thermometer for measuring the temperature of the surface of the heat insulating layer or the temperature inside the heat insulating layer, and the temperature measured by the thermometer is lower than the set value When doing, a control device for controlling the seawater supply device is provided so that a seawater layer is formed on the bottom of the holding space. |