A roll film negative. On board the Tribal class type 81 frigate Mohawk (1962) in Portsmouth Dockyard. She was in a dry dock from 21 March to 11 April 1972 when she moved to the South Railway Jetty. In the diesel generator compartment between 61 and 65½ stations on 1 deck. The photographer is looking aft from the starboard forward end of the compartment showing the narrow gap between the Paxman six cylinder diesel engine and the starboard bulkhead. A vertical format negative.