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 combined radar office between 36½ and 41 stations on the port side of 2 deck looking to starboard showing a waveguide tee circulation assembly, a receiver radio, relay units, an electric fire, two radar data distribution displays control amplifiers, a radar data distribution displays data transmission outfit and a radar circuit breaker. A vertical format negative.