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 forward end of the starboard side of the compartment showing the Paxman six cylinder diesel engine on the left. The gas turbine uptake bulkhead is on the right and a fire extinguisher is mounted on it. An automatic emergency lantern is on the aft bulkhead. A vertical format negative.