On board the Type 12 frigate HMS Londonderry (1958) alongside the fitting out berth at the West Cowes shipyard of John Samuel White & Co Ltd. The photographer is in the asdic control room on the starboard side of 1 deck between 35½ and 39 stations looking to starboard and aft. Against the starboard side of the ship on the left are a clock reading 9.50, a suppressor box above an asdic starter panel and a junction box with the Type 177 asdic consoles to the right with the range operator on the left, the bearing operator in the centre and the doppler operator on the right. The two chairs on the left are for the type 170B asdic range and depth consoles.