USSR 8-day Navy Wall Clock - Soviet 5CM-2 VOSTOK ("BOCTOK") Boat / Submarine Clock Soviet 8-day Boat / Submarine Clock 5CM-2 (5-2) for a Soviet military battleships and submarines. The Russia's Vostok Military Clock Factory produced these 8-day ship's clocks, like those found on the Soviet Navy's nuclear submarines and warships. The precision, 12-jewel mechanical movement is sealed in an aluminum housing to survive depths to 2,000' and depth charge concussions. A whopping 7 lbs., 9" diameter (6" face), 3" deep. Wall mountable. Ideal for home or office. Looks great in the gallery, captain's quarters or in your office or rec room. Comes with key and with wooden wall-mounting plate! Excellent clock, low serial number 8261, made in February 1985, still has all their original factory parts intact! Has also passed through an additional control inspection at the 2017.