It never hurts to walk the docks, something will pop up eventually, if you want to work on a fishing
boat to start, usually you can find work in the fish
plant, get on the unloading crew and that will put you in contact with the fishermen, and they will have a chance to observe your work ethic. Other wise work for a crane company or some other heavy equipment
outfit maybe long shoring on the docks, anything that will put you in the proximity of the vessels. In your spare time pound the docks.