A roll film negative. On board the submarine Sealion (1959) towards the end of a long refit at Portsmouth. The photographer is in the air conditioning compartment below the main flat between 68 and 73 stations, looking aft along the passage from 72 station showing the access ladder leading up to the hatch in the main flat at 74 station. On the left are doors into the cool room and the cold room and the door at the aft end of the passage leads into the vegetable store. On the right is an automatic emergeny lantern and the curtained doorway into the P.O's and E.R.A's washplace. A vertical format negative.