Clarke-Bumpus Plankton Sampler 

 (Woods Hole Oceanographic 

 Inst. ) 



Same as above. 



Midwater trawl 



Samie as above. 



Hi-Speed Sampler (Scripps 

 Institution of Oceano- 

 graphy) 



Hardy Continuous Plankton 

 Recorder (British, used by 

 Woods Hole Oceanographic 



Institution) 



Towing speeds: 8 to 12 



knots . 



Towing speeds: 15 knots. 



Convex-concave fouling 

 plates 



Plates in the environment 

 from 1 month to Z years. 



Deep-sea multi-shot camera 

 (Type III, Navy Electronics 

 Laboratory) 



Depth: Greater than ZO, 000 ft. 



Number of photoyraphs 

 per operation: Approxi- 

 mately 55. 



GEOLOGICAL 



Mechanical bottom signalling 

 device, "Ball Breaker" 



Depth: Unlimited. 



Substrata Acoustic Probe 

 (Marine Sono-probe) 



Depth: 700 ft. 

 Sediment penetration: 

 200 ft. 



Precision Depth Recorder 

 (Times Facsimilie Corp. 

 and AN/UQN) (Edo) 



Depth: Up to 18, 000 ft. 

 Sediment penetration: 120 ft. 

 (extreme maximiunn). 



Fathometer -- echo sounder 

 (Model 255B -- Edo Corp.) 



Depth: 2. 5 to 1, 500 ft. 



Accuracy: ± 1 to 6 ft. de- 

 pending on depth scale 

 in use. 



Sediment penetration: 

 undetermined. 



244 



