gunwale deck edge [also spelled gunnel - see below],
It's correctly pronounced "gunnel," but spelled that way only by nautical illiterates...whose numbers began to increase when an illiterate recreational boat industry renamed a vessel's saloon a "salon."
--Peggie
21st Century lexicon: Salon for gals / Saloon for guys
I call it salon because that's what I heard it called at NY boat yards and yacht clubs in 1950's... middle of last century; the 20th!!
Besides - Wife likes salon. Happy Wife = Happy, Happy!!