80 THE NAVY OCEAN SCIENCE PROGRAM 



but has been more rapid since then. Buoys have been used in 

 ocean-science research mainly for the measurement of ocean 

 currents, but the long-recognized need for expanding their 

 capability to include measurements of temperature, pressure, 

 salinity as well has led to the development of appropriate sensors. 



Oceanographic and meteorological sensors for long-term 

 unattended operations in the ocean are a reality. EflForts continue 

 in evaluating them, in improving their performance, and in 

 developing new sensors for parameters which cannot now be 

 measured from buoys at sea. 



International recognition of the need for oceanographic- 

 meteorological buoys in the oceans has taken the form of agree- 

 ments on marking and mstritime safety equipment. In addition, 

 a concentrated effort is under way, on an international scale, 

 to obtain exclusive radio frequencies for use in telemetering 

 the data from these platforms. 



Much work has been done on the long-range telemetering of 

 the data. Hardware has been developed for a data-acquisition 

 package for use in buoys, on radio transmitters and receivers 

 to meet the rigid international frequency requirements, on 

 communication systems for interrogating the buoys from shore, 

 and on the electrical power supplies necessary for long-term 

 unattended operation. 



The state of the £irt has now reached the point where truly 

 significant scientific experiments may be mounted using this 

 powerful tool. Networks for operational reporting of environ- 

 mental data from all the world oceans on a routine basis may 

 now be conceived. In the overall view, this accomplishment is 

 significant from the viewpoint of the Navy and the country as 

 a whole. 



DEEP UNDERWATER VEHICLES 



In 1957, the U.S. Navy bought the Italian bathyscaphe 

 TRIESTE and in 1958 brought it to this country. This start 

 has been of major significance to the U.S. achievement of its 

 position of leadership in exploring the ocean depths. An over- 



