Testing of Trawl Resistant Bottom Frames, 1 August 2000
 
 
Trawl resistant bottom frames manufactured by 
Flotation Technologies, each equipped with
an AM-200 and an AMTR-200 acoustic release from 
EdgeTech, were tested
in upper Penobscot Bay on the R/V Argo Maine.  Two small bottom frames (AL-200) and one 
large bottom frame  (AL-200RA) were deployed several times in depths of approximately 50-70 
meters.  The frames were released at the
surface and were allowed to settle before the acoustic releases were fired.  
On three deployments, a 
Seabird SBE-19 CTD data logger was clamped to the cage 
to measure the descent rate (one on a small frame
 and two on the larger frame).