Two manually operated winches with a capacity of 500 pounds each are 

 mounted to accomodate the south and middle hatches, A manually operated 

 BT reel is, mounted over the north hatch for use with a bathythermograph 

 and other small oceanographic instruments. The maximum capacity of this 

 reel is approximately 50 pounds. A smaller winch constructed of a wooden 

 spool is located over the north hateh. This winch is intended for use 

 with instruments weighing up to 20 pounds, such as water samplers and 

 reversing thermometers. Figure U shows the arrangement of heavier winches 

 and the upper ends of guide cables. 



Table I shows instruments installed prior to 6 September 1956. 



TABLE I 



Instruments Installed Aboard Texas Tower No. 

 as of 6 September 1956 



Instrument 



Levels 



Parameter 



AN/UMQ-5B Bendix-Friez (3) 10, 50, and 175 ft. 



Roberts current meter (3) 5 and 55 ft. depth 



Bathythermograph 



H.O. wave staff 



NRL Mk IX pressure recorder 20 and 50 ft. depth 



USC&GS portable tide gage 



Foerst sampler 



Winds 



Currents 



Thermal structure 



Waves 



Pressure 



Tides 



Salinity 



All instruments except the bathythermograph and the Foerst sampler 

 are automatically recording and may be programmed to sample at any desired 

 interval. Table II shows the sampling schedules that have been employed. 



TABLE II 



Sampling Schedules Employed on Texas Tower No. 2 



Parameter 



S ampling Perio d 



Du rati on of Sample 



Winds 

 Currents 



Thermal structure 

 Waves 

 Pressure 

 Tides 



Salinity (surface) 

 (bottom) 



continuous 



hourly 



daily 



every 6 hours 



every 6 hours 



continuous 



daily 



weekly 



continuous 

 5 min. 



30 min. 

 30 min.« 

 continuous 



^Remainder of the time, pressure maximums and minimums are obtained 

 at slow chart speed. 



