Re: Bow Thruster on 54
You could look for a Momentary Pushbutton Switch with a raised button and a N.O. (normally open) contact that is 12mm in diameter. Similar to the link below. The switch shown is 16mm, I was not able to find 12mm so I modified the bracket. You can also wire it so the light is on or off based on the switch contacts, I did not use this feature. Best Regards.
Brass Ring A54