On board the Type 12 frigate HMS Falmouth (1959) alongside the Swan, Hunter & Wigham Richardson Ltd fitting out berth at Wallsend on the River Tyne between 1 and 25 July 1961. The photographer is in the transmitter room between 49 and 52 stations on the starboard side of 2 deck looking aft from 50 station on the starboard side of the room showing a Type 692 test rack with a 692 detection unit above it and a type 693 cabinet next to it. Against the ship's side on the left are units described on Admiralty plan curator No. 899643/1 (NMM No. NPD1588) as a Type 692 with F.S.K. over and a Type 692 with E.A.N. Against the aft bulkhead are an electric fire and an amplifier above a control unit. A vertical format negative.