A 35mm roll film negative. On board the Tribal class type 81 frigate Mohawk (1962) in Portsmouth Dockyard. In the T.A.S. store and directing gear compartment on 4 deck between 16 and 27 stations. The photographer is looking aft and to port from the starboard forward corner of the compartment showing the hull outfit No. 15, type 170 sonar. The starter motor is on the right. A vertical format negative.