Hybrid ship propulsion machine

A hybrid ship propulsion machine comprising:

• an internal-combustion-drive propulsion part configured to generate a propulsive force of a ship by an internal combustion engine;
• and
• an electric propulsion part configured to generate a propulsive force of the ship by an electric motor, wherein
• the internal-combustion-drive propulsion part includes
• the internal combustion engine;
• a first propeller shaft configured to be rotated by power output from the internal combustion engine;
• a power transmission mechanism configured to transmit the power output from the internal combustion engine to the first propeller shaft;
• a first housing part housing the power transmission mechanism and the first propeller shaft;
• a first propeller attached to the first propeller shaft;
• and
• an anti-cavitation plate provided in the first housing part and disposed above the first propeller,
• the electric propulsion part includes
• the electric motor;
• a second propeller shaft provided separately from the first propeller shaft and configured to be rotated by power output from the electric motor;
• a second housing part housing the electric motor and the second propeller shaft;
• and
• a second propeller provided separately from the first propeller and attached to the second propeller shaft,
• the electric propulsion part is attached to the first housing part, and is disposed at a position higher than the anti-cavitation plate such that the second propeller sinks below a water surface during low-speed movement, which is not a planing state of the ship, and the second propeller comes out of the water surface during planing of the ship,
• the electric propulsion part includes two electric propulsion parts, and
• when the hybrid ship propulsion machine is viewed from above, the two electric propulsion parts are disposed such that axes of two second propeller shafts thereof are orthogonal to each other.