To help you out without criticizing your original post. If you want to go to some cool ports and stay for more than a few days look into the research vessels. You would probably start out as an AB.
If you want to go over to the waters in the middle east and make extra money apply with Military Sealift Command. They also stay in port for more than one day.
If you want a boring job going from point “A” to point “B” and have enough vacation to have a life go with an OSV company.