A roll film negative. On board the submarine Sealion (1959) towards the end of a long refit at Portsmouth. The photographer is in the aft torpedo compartment between 108 and 117 stations on the main flat looking to port and slightly aft from 109 station showing the submerged signal ejector on the right, a sink on the left and a locker marked C containing 3 canisters of oxygen candle ignition cartridges in the middle. A vertical format negative.