On board the type 81 general purpose frigate HMS Tartar (1960) in Portsmouth Dockyard between November 1973 and April 1974 during a refit. The photographer is in the transmitting station annexe between 45 and 50 stations on the port side of 3 deck looking forward from the port side at 47 station showing a test leads box with a change over switch above it, a transformer, a telephone handset, an automatic emergency lantern, and an amplifier against the ship's side. Predictor racks are on the right. A vertical format negative.