information from the sensors is recorded on magnetic tape for 

 future analysis in the laboratory and also displayed on other re- 

 cording equipment for examination aboard ship. The equipment 

 has been successfully used to depths of slightly more than 1,000 

 nneters. However, the basic design of the equipment will permit 

 its use to all depths. 



This is a development from equipment on which Mr. James M. 

 Snodgrass worked several years ago. 



Naval Ordnance Laboratory, White Oak, has developed 

 DEEP DIP, an unmanned, unattached vehicle used to provide an 

 instrunnent platform capable of descending to the greatest ocean 

 depths and returning to the surface after a predetermined interval 

 of time. The instrument platform is a sphere having an inside 

 diameter of 27 inches. This holds the sensing devices, recorders, 

 and batteries. Under the sphere is an anchor release mechanism 

 and a concrete anchor. Above the sphere is a rubber, gasoline- 

 filled flotation bag, equipped with a small radio transmitter. When 

 the complete system is launched over the side of a vessel, the 

 anchor carries it to the bottom. At a preset time, a clock-actuated 

 mechanism severs the anchor from the rest of the system, allow- 

 ing the flotation bag to raise the sensor sphere to the surface. 

 Once at the surface, the radio begins to send out signals, per- 

 mitting the recovery vessel to home on the device. DEEP DIP 

 is designed to withstand pressures at depths of 8 miles. DEEP 

 DIP has been used extensively to make geomagnetic measurements 

 for mine development purposes. 



Applied Physics Laboratory, University of Washington, has 

 developed the DEEP SEA RESEARCH VEHICLE. This is an 

 unmanned instrument carrier capable of 50-mile horizontal 

 trajectories at depths to 10,000 feet. This vehicle was tested 

 successfully last year. Now this, I believe, answers one of the 

 questions that was asked yesterday about the artist's conception of 

 miniature submarines. During the period of this Symposium 

 the vehicle is at sea on its first data-gathering expedition. I 

 would have been with it except for this Symposium. It is torpedo- 

 like in shape, 120 inches long and 20 inches in diameter, and has 

 a displacement of 1,000 pounds. The pressure hull is designed to 

 carry sensors and other components to a maximum depth of 

 12,000 feet. High-performance batteries propel the vehicle for 

 8 to 10 hours at six knots. It can carry an instrument payload of 



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