10. — Constant delivery pump system dredge aboard the Gail Borden. 

 A — Clam jetting water supply hose. B — Comin-essed air hose. 

 Air is supplied through this hose to the u]3take unit where it mixes 

 with the water in the hose, generating the upward movement of 

 water within the hose. C — Receiver. Material jetted out of 

 bottom and jjicked up by the dredge knife passes into this area 

 and then into the uptake of the discharge hose. D — Transport- 

 ing hose for carrying dredge material from receiver to se]:)arator ... 11 



11. — Electrical submersible pump used for supplying water to dredge jets. 

 A — • Submersible pump discharge opening, 8-inch inside diam. 

 B — Strainer surrounding pump, mesh size approximately l-inch". 

 Any object passing through this strainer will pass through inmi]! . . 12 



12. — Electrical submersible i)ump shown as mounted to 48-inch clam 

 dredge. A — 8-inch discharge, connected to header. B — Water- 

 tight electrical junction. C — Header 12 



13. — Clamming vessel showing adajitation of gear to take dredge in over 



the stern while steaming 13 



14. — Stern chute clam dredge ramp used aboard Delaware II 14 



1,5. — A converted shrimp boat. One of the several different vessel types 



which were converted for surf clam dredging 15 



IV 



