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 in the diving gear store between 46 and 47½ stations on the starboard side of 1 deck looking aft showing the workbench fitted with a vice and with drawers under it. Large and small cylinder backpacks are on the bench. The cylinder charging panel and the Birlec air dryer are fitted against the bulkhead.