Pros
(Mine all pertain to submarines). Great training, work around some of the greatest people found anywhere, serve your country, build your leadership skills, see something unique
Cons
Hours are very long. In port, you will work about 70-110 hours each week. The schedule is very dynamic. We didn't know the day we were leaving for a six month deployment until two days before. Sometimes you learn here by observing how not to do things. It is very rigid and problems are always blamed on the crew, even if procedures are faulty. Integrity issues are amazing, and everyone knows about it, but the problems aren't being fixed. The only thing that is happening is sailors who are caught go down, while everyone else cheats - on exams, on maintenance, etc. Most people start to develop a guilty conscience by all the integrity issues.