Here is a question for you, the reader.
A new class of manned submarine will be a future "SSE". That means it will be an all electrical battery operated submarine with no on-board charging. Instead charging may occur at a wharf or from some other vessel, maybe a conventional or nuclear mothersub. Or perhaps charging by a mothership or boat with a diesel engine.
Would an SSE be viable?
For what kind of missions?
Regards Pete