The food in the Navy does not "suck", I can assure you; for example, we had steak and lobster once a month! The best I ate on any submarine or the USS Blue Ridge... Some ships have their own Ship's Store where items may be purchased so it would help to know what type of ship the BF is on since a minesweeper and a carrier are night and day, insofar as available shopping. Some are obviously bigger than others. For a general "care package" type mail out, find out what snacks he likes and send a bunch of those. I would recommend a lot of the big bags of sunflower seeds (if he likes), beef jerky, cigarettes or chew he smokes (and he can even sell those to his buddies at twice the cost if not esp. the Copenhagen), toothpaste/brush, magazines (I like Easy Rider, myself), shampoo, soap, etc. stuff like that. It sounds stupid but on long deployments, the Ship's Store can run out of these items and it helps to have the "creature comforts".