The U.S. Navy destroyer USS <i>Herbert J. Thomas</i> (DD-833) at the completion of her FRAM (Fleet Rehabilitation and Modernization (program)) modernization at the Mare Island Naval Shipyard, California (USA), on 25 August 1965: View looking aft and to port in the DASH (Destroyer/Drone Antisubmarine Helicopter) equipment room, showing the two DASH transmitters. Note the large panels in the bulkhead. These were removable so that the transmitters could be serviced through the bulkhead.
U.S. Navy
Official U.S. Navy photo <a rel="nofollow" class="external text" href="http://www.history.navy.mil/our-collections/photography/numerical-list-of-images/nhhc-series/nh-series/NH-73000/NH-73641.html">NH 73641</a> from the U.S. Navy <a rel="nofollow" class="external text" href="http://www.history.navy.mil">Naval History and Heritage Command</a>