[satyap]

That's... not what labor laws cover.

These ships also have an electronics engineer aboard to take care of such stuff. That's aside from the usual team of marine engineers handling the heavy equipment. In this context, the electronics engineer handles everything from the office equipment to the deck cranes. The engineering team handles the actual engines. They kinda step on each other handling the smaller equipment around the engines (steam plants, pumps, etc -- yes they have steam plants).

And they have excellent machine shops. I expect a consumer joystick to be a) simple to fix and b) cheap and small, so plenty of spares on board.

Source: sailed aboard oil tankers.