Edit: although maybe there's a good idea: catapult or winch launch for electric aircraft would massively reduce the power and energy storage requirements to be carried onboard.
Being constrained to a ship makes things harder though. If it was simply very long (runway length), I reckon an abort would be fine. There are probably a lot of different ways to do it.
But yeah, much harder than a regular runway. Probably not economical.
Edit: although maybe there's a good idea: catapult or winch launch for electric aircraft would massively reduce the power and energy storage requirements to be carried onboard.