A roll film negative. On board the submarine Sealion (1959) towards the end of a long refit at Portsmouth. The photographer is in the control room between 59 and 69 stations on the main flat looking to port, slightly aft and up from the port side at 64 station showing a large number of gauges and handwheels against the boat's side. A blower telegraph transmitter is at the top left and a L.P. blower emergency stop push button is below it. A main intercom loudspeaker is at the bottom of the picture. The tops of the vertical high pressure direct blow main panels are in the lower centre with the gauges for Q and D1 tanks between them. Above Q tank gauge is a telemotor replenishing tank indicator. In the top right corner are a telemotor control box and a telemotor accumulator charged indicator box. In the lower right is a Hydel valve control box.