Sealion (1959). In the motor room between 92 and 103 stations on the main flat.

A roll film negative. On board the submarine Sealion (1959) towards the end of a long refit at Portsmouth. The photographer is in the motor room between 92 and 103 stations on the main flat looking to port, up and aft from the walkway at 94 station showing a double doored locker L41 and chalked on it is 'L5 key 92316' and 'Upper motor room back of door'. In the top left is locker L40 above junction panel V2, an 880 volts unit. A vertical format negative.