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 H switchboard room between 57½ and 60 stations on the port side of 2 deck. The photographer is looking forward from the aft end. Units on the left are labelled 'Supply breaker' and 'Busbar linking breaker' and on the right is "H3 switchboard extension". Various tools are stowed on a board on the forward bulkhead and a number of steel boxes are on the deck. A vertical format negative.