On board the Type 12 general purpose frigate Plymouth (1959) alongside the south side of number 3 basin in Chatham Dockyard at the end of a modernization which commenced in August 1966. The ship is berthed starboard side to the quay. The photographer is the torpedo maintenance room between 54 and 57 stations on the starboard side of 1 deck looking aft and to starboard showing a desk with drawers and a cupboard under on the left. An Hewittic rectifier, a torpedo air reservoir recharging system, two nitrogen bottles and a coil of air hose are against the starboard bulkhead. A cupboard, a steel ramp, a fire extinguisher and a torpedo work box are against the aft bulkhead. A torpedo maintenance cradle is in the foreground. A vertical format negative.