Matthew, the recording is SEA CHANTIES by The Roger Wagner Chorale on Capitol. Can't find a date. But it is 'dated' - on the back is a blurb that says "This monophonic microgroove recording is playable on monophonic and stereo phonographs. It cannot become obsolete."
I asked my husband if they ever sang when he was in the Navy. He said there was one guy who was always trying to get a song up, but that everyone laughed at him. Isn't that sad? Guess they don't let 'em stay out to sea long enough anymore. Or maybe it's the TV/VCR. Like us, they can watch someone else singing.