In my experience, maritime grads are very good on the bridge right off the bat. The OOD PQS covers a lot of things a maritime grad probably doesn't have much experience with and, even in the ship driving realm, we do some things that no merchant mariner would have any reason to train to...UNREP, DIVTACs, plane guard, EMCON ops, etc. All that said, being a 3rd mate will still put a new ENS ahead of the power curve.Also agree to be careful if/when you get out into the fleet as a SWO with a license. You will be a lot better prepared, but there is still a ton to learn. I sailed as a cadet on a Coast Guard ship and one of the new ensigns struggled with qualifying for OOD because he was just so dead set on what he learned in school. Don't be that guy
More broadly though, while ship driving is obviously a core competency in surface warfare, the job is much more about the leadership/administration of our sailors and tactical employment of the platform.