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would occupy the deckhouse abaft the smokepipe, and the galley and messing 

 compartment would be forward of the laboratory. The meteorologists should 

 have a balloon inflation shelter on the top of the after deckhouse, and in this 

 shelter could be housed radiosonde and other recording equipment. The below- 

 decks plan would be dictated to some extent by the required machinery spaces 

 but every effort should be made to keep living quarters clear of the extreme 

 ends of the ship. The acoustics laboratory should be below decks and near the 

 site of the main acoustical equipment. 



It is considered that twin screws are a necessity. They should be made 

 of cast steel and should be protected by Kort Nozzles both to increase efficiency 

 and to help prevent fouling. An oversize rudder would be required to maintain 

 control at very low speeds. Both rudder and engine controls should be provid- 

 ed with remote control from the quarter-deck or from the after end of the deck- 

 house where visibility is best. It has been suggested that the main decking be 

 constructed like a carrier's so that there are many tie-down cleats available yet 

 having a minimum of protrusions. 



Dr. Iselin of the Woods Hole Oceanographic Institution has stated that 

 acoustical characteristics of the ship must be thoroughly considered inasmuch 

 as the ship would undoubtedly be used for measurements of sound in the sea, as 

 well as for other oceanographic purposes. He believes that there is a good 

 possibility that a vessel may be designed for both oceanographic and acoustical 

 research purposes, but that if the oceanographic ship does not possess adequate 

 characteristics, one of which is quietness, then another special vessel must be 

 designed specifically for acoustical research. 



There is no reason to believe that the acoustician's criteria cannot be 

 met with the oceanographer's in the same design provided knowledge of the re- 

 quirements is presented before the initial design stages. The acoustics re- 

 search people particularly desire quietness of machinery. This means consid- 

 eration of main propulsion and auxiliary machinery giving a minimum of vibra- 

 tion. 



Mr. Allyn C. Vine, also of Woods Hole, has requested that the design 

 be quite radical and that at least 80 percent of the available deck space be re- 

 served for the use of the scientists rather than for ship's operations. He, as 

 well as Mr. John Lyman of the U.S. Navy Hydrographic Office and others, is a 

 strong proponent of having an internal well incorporated into the design. Inter- 

 nal wells mean difficulties in design and construction but they have been used 

 successfully in smaller ships and their advantages may far outweight the diffi- 

 culties. Obviously, the ship must be extraordinarily maneuverable if an inter- 

 nal well is to be used, and twin screws, jets, cycloidal propellers or other aids 

 to maneuverability must be considered. It is the general consensus that no 

 provision whatsoever should be made for placement of guns in time of war ex- 

 cept perhaps for the lightest defensive armament. 



Internal communications should be very well planned. The familiar 

 "squawk-boxes" should be tied in to each other from all scientific and operation- 

 al stations aboard, and should have provision for three or four-way conversa- 

 tions without having to hold down keys manually. It is felt that an adequate in- 

 tracommunication system is highly important for the sake of efficiency, partic- 

 ularly when engaged in multiple-ship operations where the word may be passed 

 by radio to any or all stations on other ships so equipped, and still without car- 

 rying additional radio transmitters and receivers at each station. Radio relay 

 through an intracommunication system appears to be the answer. 



