U.S.N. WATCH CAP STENCIL Wool knit caps with the top of the head sewn round were adopted as headgear for deck hands who were exposed to cold winds at sea. As the name "watch cap" implies, this cap has no visor so that it does not get in the way of the deck deck officer's watch for watching and monitoring the enemy with binoculars and the like. The uneven knitted fabric and grainy stenciling are attractive.