Civilian skills and simulators for a modern reserve fleet

Could the United Kingdom find enough reservists with civilian skills relevant to modern warships?

Potentially, by recruiting mariners, heavy-machinery operators, and technical personnel and then using duplicate simulators to sustain their naval-system training.

Mariners provide one possible source of reserve personnel, but recruitment could also draw on people who operate diesel engines and heavy machinery ashore. Their skills and licences have some relevance to shipboard machinery. Operating the computers that direct naval sensors and weapons also requires skills that can be learned. A proposal to build multiple copies of naval simulators would give reservists access to training equipment. It would also preserve training availability while one simulator received updates.