A fuel cell ship includes a fuel cell compartment in which a fuel cell is installed, a tank compartment in which a fuel tank is installed, a fuel supply pipe through which fuel is supplied from the fuel tank to the fuel cell, and a control unit. The fuel supply pipe includes at least two shutoff valves. Fuel gas detectors that detect a fuel gas being in a gaseous state of the fuel are each installed in the compartments. If at least one of the fuel gas detectors detects that a concentration of the fuel gas is equal to or greater than a predetermined standard value, the control unit controls to close a shutoff valve in a compartment out of the tank compartment and the fuel cell compartment, where the fuel gas detector having detected the concentration equal to or greater than the standard value is installed.

A fuel cell ship includes a fuel cell compartment in which a fuel cell is installed, a tank compartment in which a fuel tank is installed, a fuel supply pipe through which fuel is supplied from the fuel tank to the fuel cell, and a control unit. The fuel supply pipe includes at least two shutoff valves. Fuel gas detectors that detect a fuel gas being in a gaseous state of the fuel are each installed in the compartments. If at least one of the fuel gas detectors detects that a concentration of the fuel gas is equal to or greater than a predetermined standard value, the control unit controls to close a shutoff valve in a compartment out of the tank compartment and the fuel cell compartment, where the fuel gas detector having detected the concentration equal to or greater than the standard value is installed.

An exemplary fuel cell ship is a fuel cell ship for propelling a hull by using electric power supplied by a fuel cell that generates electric power through an electrochemical reaction of fuel, and includes at least one compartment including an emission source of the fuel, and a vent pipe through which the fuel in the compartment is released to outside of the hull. A release port of the vent pipe is located at a position higher than a cabin or a bridge provided on the hull.

A ventilation and heat dissipation apparatus of a wind-assisted rotor includes a cylinder, a top cover, and a rain shielding plate. The top cover is disposed at the top of the cylinder and covers the top of the cylinder, and the top cover is provided with a manhole communicating with an inner cavity of the cylinder. The rain shielding plate is disposed above the manhole and covers the manhole, and the rain shielding plate and the top cover are spaced apart to form a heat dissipation gap that communicates with an external atmosphere.

A ventilation and heat dissipation apparatus of a wind-assisted rotor includes a cylinder, a top cover, and a rain shielding plate. The top cover is disposed at the top of the cylinder and covers the top of the cylinder, and the top cover is provided with a manhole communicating with an inner cavity of the cylinder. The rain shielding plate is disposed above the manhole and covers the manhole, and the rain shielding plate and the top cover are spaced apart to form a heat dissipation gap that communicates with an external atmosphere.

Vapour transfer assembly for a plurality of oil tanks being connected to a common ventilation pipe to allow the atmosphere to be displaced from the tanks to avoid excessive pressure build-up in the tanks. The tanks are grouped into clusters of tanks comprising at least two tanks. A vapour transfer conduit from at least a first tank of such cluster of tanks is connected to a second tank of same cluster causing the atmosphere displaced from the first tank of the cluster of tanks to move through at least the second tank of said cluster of tanks before entering a common ventilation pipe. Thereby, a slower concentration build-up of volatile organic compounds in the atmosphere entering the common ventilation pipe is obtained. A method for loading such tanks is also contemplated.

Vapour transfer assembly for a plurality of oil tanks being connected to a common ventilation pipe to allow the atmosphere to be displaced from the tanks to avoid excessive pressure build-up in the tanks. The tanks are grouped into clusters of tanks comprising at least two tanks. A vapour transfer conduit from at least a first tank of such cluster of tanks is connected to a second tank of same cluster causing the atmosphere displaced from the first tank of the cluster of tanks to move through at least the second tank of said cluster of tanks before entering a common ventilation pipe. Thereby, a slower concentration build-up of volatile organic compounds in the atmosphere entering the common ventilation pipe is obtained. A method for loading such tanks is also contemplated.