Trim angle control apparatus

A trim angle control apparatus configured to control a trim angle of an outboard motor or a sterndrive attached to a watercraft, wherein

• the outboard motor or the sterndrive includes a prime mover and a propulsor driven by the prime mover, wherein
• the trim angle control apparatus comprises:
• an actuator configured to change the trim angle;
• a sensor configured to detect a moving speed of the watercraft or a rotational speed of the prime mover;
• a switch configured to be operated by a ship operator to enable or disable an automatic trim for automatically adjusting the trim angle to a target angle predetermined in accordance with the moving speed of the watercraft or the rotational speed of the prime mover detected by the sensor;
• an electronic control unit including a processor and a memory coupled to the processor and configured to control the actuator so that the trim angle becomes the target angle when the automatic trim is enabled;
• and
• an operation member configured to be operated by the ship operator to input a change command for changing the target angle when the automatic trim is enabled, wherein
• the processor is configured to disable the automatic trim when the target angle changed by the change command reaches a maximum value of the target angle predetermined in accordance with the moving speed or the rotational speed.