Jet fuel is highly refined kerosene #1 fuel oil. Diesel #2 fuel oil.
Same, same. (Oooh Rolls Royce....wow!)
Not really. The MT30 is essentially a an aero jet engine adapted to generate electric propulsion to drive a ship. It’s not a diesel engine, it’s a high performance gas turbine powerplant.
Most uk and us warships use gas turbines.