Royal Navy Tests Fighting Efficiency in Arctic - 'Vengeance' in the Arctic ice pack on her decks, foreground, are a 'Sea Fury' and a 'Firefly'. With Royal Navy Arctic Force: For six weeks, units of the Royal Navy, including the light carrier Vengeance, two destroyers, a frigate and other small vessels have carried out endurance tests in these freezing waters, testing the fighting efficiency of men and ships over long periods of extreme cold. Weapons and personal equipment were rigorously tested. March 10, 1949. (Photo by British Official Photograph).