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 operations room between 30⅓ and 35½ stations on 1 deck looking to starboard and forward from the port side of the centreline at 34½ station showing the captain's chair facing a visual display unit in the centre of the room. This visual display unit is fitted with a visor assembly. Against the ship's side are a desk with a bunk under, a noticeboard and a recorder unit. To the right of the captain's chair are an ARL table with data selection and torpedo control panels above it, an Asdic type 177 unit with an electric fire fixed to the side of it, an asdic type 176 terminal box and an A/S mortar trajectory bearing terminal box.