4 
A TYPICAL SPEED RECORD IS SHOWN IN FrIcuRE 6, 
AT A TINE WHEN THREE METERS WERE RUNNING SIMULTANEOUSLY. 
PLOTS OF A PORTION OF THE THREE UNIT RECORD ARE SHOWN 
mn Froure 6, AND OF THE 750 FM DIRECTION SIGNAL IN 
Preunm (« 
IN GENERAL, CURRENT SPEEDS AT DEPTHS OF 200 
AND 5OO FNS ARE FAIRLY HIGH. A MAXIMUM CURRENT OF 
I.16 KNOTS WAS RECORDED AT 200 FMS, WITH CURRENTS IN 
EXCESS OF 0.75 KWOTS RELATIVELY COMMON. SPURT CURRENTS 
or up To 0,64 KNOTS IN ONE SECOND HAVE BEEN OBSERVED 
AT THIS DEPTH, WHILE CURRENTS BELOW THE METER THRESHOLD 
OCCUR AT OTHER TIMES. MeTER THRESHOLD Is ABOUT 0,04 
KNoTS,. Av SOO FMS THE MAXIMUM RECORDED CURRENT SPEED 
was 0.08 KNOTS, ALTHOUGH THIS DID NOT OCCUR AT THE 
TIME OF YEAR DURING WHICH DROGUE MEASUREMENTS INDICATE 
THE HIGHEST SPEEDS AT THIS DEPTH. REFERENCE TO 
Ficure 6 WILL SHOW THAT NO READY CORRELATION EXISTS 
BETWEEN THE 2I, 200 ann 500 rm recorps. LoncER RECORDS 
ARE EQUALLY INCONCLUSIVE IN THIS RESPECT. CURRENTS 
REPORTED FROM THE SHORT LIVED 2000 FM METER RANGED UP 
TO 0.15 KNOTS, WITH THIS METER 35O FEET OFF THE BOTTOM 
FOR EASIER HANDLING OF THE UNIT. 
CURRENT DIRECTIONS FROM THE 750 FM UNIT SHOW A 
FANTASTIC CHANGE IN AZIMUTH WITH TIME. FricuRE 7 SHOWS 
cHances or 50° rm 30 SECs 80° xin 60 sec, 130° In 4 MIN, 
T80° rw 8-I/2 min, 4npd 360° rn 77 min, OTHER PORTIONS 
217 
