A storage system for a boat includes one or more storage compartments situated in a bow of a boat. An air flow path includes an air inlet opening, the storage compartment, and an air outlet opening. A fan is situated to move air along the air flow path. The fan may be positioned proximate one of the air inlet and the air outlet, for example.

A storage system for a boat includes one or more storage compartments situated in a bow of a boat. An air flow path includes an air inlet opening, the storage compartment, and an air outlet opening. A fan is situated to move air along the air flow path. The fan may be positioned proximate one of the air inlet and the air outlet, for example.

A marine vessel with a hull extending horizontally from a bow to a stern. The hull has opposing walls that extend upwardly with at least one of the opposing walls having a first opening therein. A tower has opposing feet with a raised section therebetween. The opposing feet are coupled to the opposing walls and one of the opposing feet is horizontally aligned at least in part with the first opening. An engine compartment is configured for positioning an engine therein. A first conduit fluidly couples the first opening and the engine compartment for at least one of ventilating and exhausting the engine compartment.

A marine vessel with a hull extending horizontally from a bow to a stern. The hull has opposing walls that extend upwardly with at least one of the opposing walls having a first opening therein. A tower has opposing feet with a raised section therebetween. The opposing feet are coupled to the opposing walls and one of the opposing feet is horizontally aligned at least in part with the first opening. An engine compartment is configured for positioning an engine therein. A first conduit fluidly couples the first opening and the engine compartment for at least one of ventilating and exhausting the engine compartment.

A storage system for a boat includes one or more storage compartments situated in a bow of a boat. An air flow path includes an air inlet opening, the storage compartment, and an air outlet opening. A fan is situated to move air along the air flow path. The fan may be positioned proximate one of the air inlet and the air outlet, for example.

A double-walled pipe ventilation system is disclosed. The double-walled pipe ventilation system includes: an engine unit including a jacket cooling circulation unit dissipating heat generated by an engine; a fuel supply unit connected to the engine unit via a double-walled pipe and supplying fuel through an inner pipe of the double-walled pipe; an air outlet line along which air is discharged from an outer pipe of the double-walled pipe; an air circulation unit circulating the air discharged along the air outlet line; and a water ejector provided to the air circulation unit and suctioning air circulated through the outer pipe using a high-pressure working fluid introduced into the water ejector.

A double-walled pipe ventilation system is disclosed. The double-walled pipe ventilation system includes: an engine unit including a jacket cooling circulation unit dissipating heat generated by an engine; a fuel supply unit connected to the engine unit via a double-walled pipe and supplying fuel through an inner pipe of the double-walled pipe; an air outlet line along which air is discharged from an outer pipe of the double-walled pipe; an air circulation unit circulating the air discharged along the air outlet line; and a water ejector provided to the air circulation unit and suctioning air circulated through the outer pipe using a high-pressure working fluid introduced into the water ejector.

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.