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 helicopter hangar between 49 and 57 stations on the centreline of 1 deck looking to port from 54 station showing an hose bracket, a control gear box, a rectifier, an helicopter control box, an A/S mortar control junction box, cable stowage brackets, a portable fire extinguisher trolley, a CO² fire extinguisher and an high level shelf against the port bulkhead. The flying director officer's position is on the left. A vertical format negative.