being followed shall be continuously variable 

 from the surface. 



(4) Accuracy in following any level of any parameter 

 shall be limited only by the accuracy of the stan- 

 dard sensor modules and the response time of the 

 entire system. 



(5) Utility of the system is directly dependent upon 

 fast vehicle response time. 



(6) The device shall position itself by controllable 

 vanes or fins and/or by a winch aboard ship. 



(7) Provision shall be made for the attachment of 

 detection, observation, and sampling devices. 

 The effect of these attachments upon the guidance 

 or positioning system should not imipair the 

 unit's ready response to variables. 



1.2200 TETHERED VEHICLES. 



1.2210 Self-Propelled Robot Vehicle (5) 



Purpose: To operate from ships of opportunity to carry 

 sensing elements for vertical profiles while the ship 

 is underway without necessity for special installation 

 of heavy winch and boom on board. 

 Specifications and requirements: 



(1) Must have a streamlined body which can be towed 

 (or powered through cable) astern of ship travel- 

 ing at speeds 15 to 20 knots for distanc"fes up to 



4, 000 miles. By guidance system and with power 

 supplied through cable, vehicle could be made to 

 dive without heavy strain on cable, or to move 

 forward of ship and sink to depth requir'ed as 

 ship passed over. It miight also be operated con- 

 tinuously at constant or varying depth below ship 

 throughout trip. 



(2) It miust be capable of operation from surface to 

 depths of 300 m. 



1.2300 FREE VEHICLES. 



1.2310 Large Submersible Research Vessel (4) 



An oceanographic research vessel capable of independent 

 operation from the surface to at least 300 meters for 

 observing the behavior of organisms in relation to their 



429 



