I was thinking that 'food' 'water' and 'fuel' would be 'things' all on their own so haveing the Cruise Ship without these things, and no people, and it becomes no fun.. and without the fuel maybe no way to power the radio.. with the nuclear sub you always have power, it also comes with several forms of communication gear.. and if a nuclear sub goes missing, you can bet that the government that the sub belongs to will not lightly stop searching for it.. I threw in the desalinization plant so you could make your own water from the sea, you would then have enough to keep the subs reactor cool (I hope) as well as drink..