Everything on a boat has a different name than it would have if it weren't on a boat. Either this is ancient seafaring tradition or it's how people who mess around with boats try to impress the rest of us who actually finished college.
P. J. O'Rourke (2007). “Holidays in Hell: In Which Our Intrepid Reporter Travels to the World's Worst Places and Asks, "What's Funny About Thi”, p.142, Grove/Atlantic, Inc.