50 — 



100 — 



150 



l\ 1 1 1 



"T 



1 



1 1 1 1 1 



1 



1 ' 



7 



\ 







GATE 3 





/ 



- \ 







{ 



L 



, J - 



\ 



GATE 4 







A 



_J 





— 



/' ' ' ' 



GATE 1 







GATE 2 







STATION 7-TI 



1 1 1 1 



I 



1 



1 1 1 1 1 



1 



1 



0040 0100 0120 0140 0200 0220 0240 0300 



TIME 



FIGURE 2. SCHEMATIC TOWPATH OF TOW 7-1], 6 FT ISAACS-KIDD MIDWATER 



TRAWL WITH DISCRETE DEPTH PLANKTON SAMPLER, GULF OF MEXICO, 

 28 MARCH 1967. 



