A whole plate negative. On board the Royal Navy frigate Rothesay (1957) in the fitting out berth of Yarrow & Co Ltd at Scotstoun, Glasgow. In the Combined Radar Office on the port side of 2 deck between the officers' WC and the officers' galley. The photographer is looking forward and to port from near the doorway. On the left is the J.D.A. display and next to it is a rack of Cathode Follower Units. The interrogator unit has the transponder unit next to it and in the corner are power units.