Navy vs. coast guard?

My husband is thinking of joining either the Coast Guard as an Electricians Mate or Navy in unknown field. He picked EM b/c it has an open A school and the said it had the most openings so he could advance faster. In the Coast Guard he would go in as an E4 and they said they thought he could be E5 in 6 months. However, in the Navy he would go in as an officer. I know officer is much better, but we're concerned how much more the Navy will be underway vs. the coast guard. We have a small baby and he would prefer to spend as much time with her as possible. I've heard even when the Navy ship is docked, your still on 24-7 with no real "weekend" type breaks. How do guys in the Navy plan family vacations or family outings like the zoo if their schedule is like this? Is the coast guard like this too? This is a huge decision and both sides seem to have pros and cons. It's also hard to get an idea of what to really expect by talking to a recruiter. In the Navy would I have to worry about him more? What are the major differences between Navy life vs. Coast Guard life? If this was your decision, what would you do? Any other info you think would help us make this decison is welcomed.