the military is moving away from nuclear power because of the super high cost of operation and maintenance, not to mention if anything breaks, the ship is down untill a part can be manufactured and delivered.
deisle electic is the wave of the future. just like a train engine that uses en electric motor whos power is generated from a large deisle generator. all the new cruise ships are going in this direction.
the advantages. they can repower with ANY engine capable of creating electricity, including a large bank of batteries, like a sub, if necessary. they can install engines that will run on a viraty of fuels as well, like a single engine that will run on gasoline, deisle, or jet fuel(kerosine), bio-deisle, gas-alkahol mixes, with just a minor change to tuning. giving them the ability to refuel just about anywhere from any country.
also giving them the ability to repower at a future date, decades from now, by simply swapping out the generator with what ever is currently available as opposed to maintaining a number of spacific replacement engines built for that spacific ship.
nuclear power is over rated. a fad that has come and is now going. its only practical use now is systems that need a single power supply that will last a long time like space applications with probes or satilites, or for producing ELECTRIC power for comercial use. or bombs.
sooo, you brits need to get with the times.....