23 



END CAP 

 (HOUSING FOR 

 ELECTRONICS) 



LIFTING BAR 

 INNER FRAME 



OUTER FRAME 



• WEIGHT 

 ■ WEIGHT PACK 



_ MUD DOOR 

 ELASTIC STRAP 



MUD DOOR 



BASE (SLED) 



DEPLOYED 



m 



ON THE 

 SEAFLOOR 



*\ 

 ACOUSTIC 



SIGNAL 

 ,^TO THE 



■ SURFACE 



h 



□J 



~X7 



"DOWN" POSITION 



Transecting the 

 Sediment-Water Interface 



*% SIGNAL 

 ^ RATE 

 DOUBLES 



SEAFLOOR 



1 . FACEPLATE 



or "WINDOW" 



OF PRISM AGAINST 



SURFACE TO BE 



PHOTOGRAPHED 



3. CAMERA PHOTOGRAPHS 

 (MA^3DIMENT PROFILE 



2. IMAGE REFLECTS OFF 45° 

 MIRROR 



DISTILLED WATER INSIDE PRISM 



Figure 2-3. Schematic diagram of Benthos, Inc. Model 3731 REMOTS® sediment-profile 

 camera and sequence of operation on deployment. 



Monitoring Cruise at the New London Disposal Site, 1992 - 1998 



