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 boiler room between 41 and 49 stations on 3 - 4 deck looking to starboard from the starboard side of the lower platform about 47 station showing the Crockatt electric salinometer panel against the ship's side and a board holding nine gauges. The gauges are labelled 'circ. pump discharge no. 2 gauge', 'evaporator feed no. 3 gauge', FW pump discharge no. 4 gauge', '??air pump suction no. 5 gauge', brine pump suction no. 6 gauge', 'brine pump discharge no. 7 gauge', 'element drain pump suction no. 8 gauge' and 'element drain pump discharge no. 9 gauge'. No. 1 gauge is obscured and the label cannot be read and no. 5 gauge label is only partially visible. A vertical format negative.