A hybrid type vessel propulsion apparatus comprising: an engine; a motor (11,120); a propeller shaft configured to rotate together with a propeller; a first transmission path configured to transmit power of the engine to the propeller shaft; a second transmission path configured to transmit power of the motor (11,120) to the propeller shaft without transmitting the power of the motor (11,120) through the first transmission path; a first clutch including a first disconnection state in which power transmission of the first transmission path is cut off and a first connection state in which the power transmission of the first transmission path is permitted; a second clutch including a second disconnection state in which power transmission of the second transmission path is cut off and a second connection state in which the power transmission of the second transmission path is permitted; a switch configured to switch the first clutch from the first disconnection state to the first connection state and configured to switch the second clutch from the second connection state to the second disconnection state, or configured to switch the first clutch from the first connection state to the first disconnection state and configured to switch the second clutch from the second disconnection state to the second connection state; and a controller configured or programmed to execute tuning control of both the engine and the motor (11,120) so that a difference between an absolute value of an engine conversion rotation speed that is obtained by converting a rotation speed of the engine into a rotation speed of the propeller shaft and an absolute value of a motor conversion rotation speed that is obtained by converting a rotation speed of the motor (11,120) into the rotation speed of the propeller shaft becomes larger than zero and becomes equal to or less than a predetermined upper limit value when the switch switches the first clutch between the first disconnection state and the first connection state and switches the second clutch between the second connection state and the second disconnection state; characterised in that the controller is configured or programmed to start the tuning control in a state in which the absolute value of the engine conversion rotation speed is larger than the absolute value of the motor conversion rotation speed. an engine; a motor (11,120); a propeller shaft configured to rotate together with a propeller; a first transmission path configured to transmit power of the engine to the propeller shaft; a second transmission path configured to transmit power of the motor (11,120) to the propeller shaft without transmitting the power of the motor (11,120) through the first transmission path; a first clutch including a first disconnection state in which power transmission of the first transmission path is cut off and a first connection state in which the power transmission of the first transmission path is permitted; a second clutch including a second disconnection state in which power transmission of the second transmission path is cut off and a second connection state in which the power transmission of the second transmission path is permitted; a switch configured to switch the first clutch from the first disconnection state to the first connection state and configured to switch the second clutch from the second connection state to the second disconnection state, or configured to switch the first clutch from the first connection state to the first disconnection state and configured to switch the second clutch from the second disconnection state to the second connection state; and a controller configured or programmed to execute tuning control of both the engine and the motor (11,120) so that a difference between an absolute value of an engine conversion rotation speed that is obtained by converting a rotation speed of the engine into a rotation speed of the propeller shaft and an absolute value of a motor conversion rotation speed that is obtained by converting a rotation speed of the motor (11,120) into the rotation speed of the propeller shaft becomes larger than zero and becomes equal to or less than a predetermined upper limit value when the switch switches the first clutch between the first disconnection state and the first connection state and switches the second clutch between the second connection state and the second disconnection state; characterised in that the controller is configured or programmed to start the tuning control in a state in which the absolute value of the engine conversion rotation speed is larger than the absolute value of the motor conversion rotation speed.