These decks are the highest of the ship and are generally not used for scientific purposes due to their remote locations and the multitude of antennas fastened to them. When necessary, these decks are ideal for spotting objects in the ocean because of the 360-degree visibility.
Space is provided on top of the aft control shack for the rigging of scientific antennas.
If an antenna must be positioned higher up or elsewhere on the vessel, special arrangements should be made with the captain. From this area the ship is navigated, conned, maneuvered and otherwise operated in such a manner as to accomplish the goals of the cruise safely and effectively. Additionally, operational aspects of the engineering department and the scientific party are monitored by the bridge watch officer. The watch officer maintains a log which records the date, time and position of all scientific events. A copy of this log is given to chief scientists and others who request it at the end of the cruise.