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 radar display annexe between 30 and 32 stations on the port side of 1 deck looking forward and to port showing two very similar electronic units against the port bulkhead with a further three of the type against the forward bulkhead. A telephone and two cabinets are against the ventilation trunking in the corner. A W/F generator and video mixer unit is on the right. A vertical format negative.