Who thought using a touch screen for controlling a ship was a good idea. As someone else said they are not good in cars either.
This is not a good USAGE (notice a good English word instead of the pretentious 'use-case').
It is not the fault of iPads (could be any manufacturers, but Reg picks on Apple). When I play iTunes in the car, it is very difficult to control. I'd much rather the feel of physical buttons. Screens are logical rather than physical – the buttons can move on the screen depending on what mode you are in.
The usage of any touch screen for such a function is not good usage.