Hi again,
Just wanted to know if you are going to go for realism or stylized anatomy / parts. ?
If i could add some thoughts to this design, maybe if you took ship parts like the main center pole, mast? i think its called the one that holds the biggest sails and made that then broke it and then stuck parts on him that would work very well here.
^With this in mind i can see the front and back of a nice looking boat at his shoulder locations and if you added a nice statue or sculptured head piece defining that very ship this would turn out super nice.
Hope that helps it might be a lot but it will be worth it as a completed piece if you took the time to study boats like that of the black pearl - and some other boats with designs at the front (idk the name of that exactly)
Same for the sea debris growths
Blue words are links to sources i mentioned, good luck i can see big things here.