I have a feeling this is what the OP is talking about, not diving drysuits, and the answer is an emphatic "yes" :
Sailing Dry Suit Options | Drysuits by Kokatat, Musto, GUL, Gill, Henri Lloyd - Annapolis Performance Sailing (APS)
I still have my old Musto drysuit from younger days when I did a lot of bow on raceboats in SF Bay where it's always wet and cold sitting on the front of the rail or working ahead of the mast on any boat much under 45'. No one ever laughed, not even once. Also was great for being middle man on an Etchells. If you're in cold water and/or cold air and alot of wind, drysuits are a godsend.