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 crew accommodation space between 103 and 117 stations on the main flat looking to starboard and slightly forward from the centreline at 107 station showing a triple tier bunk unit. A loudspeaker, bag rack, 115 volts electrical box and lockers are against the boat's side. A vertical format negative.