There are many very valuable books written on yacht design. May be not as many as the ones in the architectural field but still, designwise or engineeringwise you can find very valuable books on designing sail or motoryachts.
I will share some of these books, whose authors I know in person and highly admire.
I have been lucky enough to be their student; learning anout yacht design in person directly from them.
They are all working as designers in the yachting industry; teaching in the university and also writing books!
What more would we need! :)
Below are Massimo Gregori's books. More info on: Yankee Delta Studio
Below are Massimo Musio-Sale's books. More info on: La Spezia-Yacht Design Dept.
Below is Massimo Paperini's book. More info on: Duck Design
Keep close to the sea and do not forget to stay wet...