Amphibious vehicle

An amphibious vehicle comprising:

• a vehicle body;
• a traveling portion which causes the vehicle body to travel on land;
• a propulsion portion which generates a propulsive force in water and causes the vehicle body to travel on water;
• a power portion which provides power to the traveling portion and the propulsion portion;
• and
• a cooling portion which cools at least the power portion,
• wherein the cooling portion includes a first cooling source introducing portion which takes in air from the outside as a cooling source and a second cooling source introducing portion which takes in water from the outside as a cooling source;
• the second cooling source introducing portion includes an opening which takes in water and the opening is open on a rear side of a center of gravity of the entire vehicle body and in a draft portion in an outer surface of the vehicle body;
• the traveling portion includes a plurality of wheels having a drive wheel and a driven wheel, a crawler belt wound around the plurality of wheels, and a movable support arm which supports at least a part of the plurality of wheels to be movable in a vertical direction;
• the movable support arm is displaceable between a first state in which at least a part of the wheels is supported in a first position in a vertical direction and a second state in which at least a part of the wheels is supported in a second position which is on an upper side relative to the first position with respect to the vehicle body;
• and
• the opening of the second cooling source introducing portion is disposed at a position which is closed by the movable support arm when the movable support arm is in the first state and at a position which is not closed by the movable support arm when the movable support arm is in the second state.