Tell me about anchor and supply boats

Hey all, I’ve been offshore now for five years, currently working on the Hawsepipe CD to make my 1600GT M/M. I currently work on a liftboat but have come to the conclusion that I will never learn what it is to be a true mariner and never acquire any real boat-handling skills unless I go work on a larger vessel that doesn’t stay jacked up in the air 90% of the time. I plan making the transition as a mate; can anyone give me an idea what to expect, what to watch out for and what their overall opinion of these vessels as a whole? Thanks