Equipment Railways and 

 Underwater TV 



The vertical railway system has 

 played a vital part in many tower in- 

 vestigations. Carts with their diversified 

 array of sensing devices are raised and 

 lowered over its steel tracks, which are 

 spaced 30 inches apart. The instruments 

 (discussed previously in Part IB transmit 

 data by cable to the instrument house. 



The underwater television system 

 mounted on the vertical railway tracks 

 has proved its usefulness in many studies. 

 The system is composed of an under- 

 water television camera and a 16-mm 

 motion- picture camera in watertight 

 housings, depth and temperature sensors, 

 and six 500-watt floodlights. 



Control of the unit is through a 

 coaxial cable connected to the monitoring 

 system in the instrument house where 

 the cameras and lights can be tilted and 

 trained. Focus and iris adjustments are 

 also controlled from the monitor console. 

 The underwater motion-picture camera 

 can be turned on when a desired subject 

 is seen on the TV monitor. The system 

 is used to study marine organisms, water 

 motion, operation of equipment, and be- 

 havior of objects placed on the sea floor. 



Operator prepares to lower underwater TV and 

 motion-picture camera unit. The equipment on the 

 railway tracks is raised and lowered on steel cable 

 by an electric winch. Power winch is at lower right 

 and control panel is at upper left. 



126 



