IWC Navy-Issued Deck Watch in CaseThe ultimate back up This is the first time we have offered a pocket watch on Bulang and Sons and, as you might guess, its something a little bit special! This IWC was delivered to the German navy as a deck watch, meant to be the final back up in case of failure of modern safety equipment such as atomic clocks and GPS. Qualified sailors can navigate with a clock and a compass and so these watches were kept on the bridge of a naval ship and wound once