Skills that sailors had other than Sailing (see Etcetera Etc pp. 86 and a half):

Sewing, Tattooing, Birdwatching, Whittling, Scrimshawing, Training Pets: Monkeys, Parrots, Crickets, Dogs; Bone Carving: Buttons, Needles, Combs, Gambling Chips; Musical Instruments, Knot Tying, Making Games: Quoits, Balls; Dancing Jigs & Singing Seashanties, Reading (most ships had a library), Basketweaving, and Palm & Leather Braiding, Collecting Specimens, Botanical Drawing/Painting, Shooting and Skinning Animals, Cooking, Herbal Remedies, Rope & Net Making.

My friend, James Merrell gave me a very old special piece of scrimshaw that is on my desk for me to look at whenever I please. If you are not up with the art of scrimshawing, it was traditionally done by sailors and is a kind of miniature naive carving done on bones, mostly whalebones, most often depicting sea adventures, expeditions & creatures.