Yep, same ranking system as the Navy but our "average" unit is commanded by a CPO or CWO and has under 30 people.
Besides size and missions of course, the biggest difference between the Coast Guard and the other services is our average unit is located in a small community. We are part of the community and behave accordingly.
No offense to the Navy folks, but we can't afford to act like a bunch of drunken sailors.