Section 16 



COCESPUR ISLAM), GEORGUA -- U. S. KAVAL EECEIVIIC STATION 



AI6.0I Location of the Test Station and Test Board 



A test Ijoard of the panel type was Installed on August 51, I9H, 

 at the U. S. Naval Receiving Station, on Cockspur Island near the mouth 

 of the Savannah Elver, ahout ik miles south of Savannah, Geozigia. This 

 test "board was designated by the syaibol TENSCS-l. No Infonnatlon was 

 given as to Its exact location. The operation of this test hoard was 

 discontinued after the last panels were removed on June 1, 1943, 

 because of the decommissioning of this Station. 



AI6.02 Hydrographlc Data 



The depth of water ^ere the test hoard was Installed was 50 

 ft; the tidal range was 7 ft; the maximum velocity at both ebb and 

 flood tide was 5 knots. The ten^jerature of the water at the time of 

 Installation was 65° F. The water at this point was reported to be 

 heavily polluted. 



AI6.05 Marine Borers 



1. Teredlnldae . Teredlnldae , including Bankla gouldl , occurred 

 In k of the 6 control panels. There were 3, 10, and 200 embryonic 

 individuals, respectively, in 5 of these k panels, while in the 

 fourth there were 2,6i«0, with lengths up to 50 mm; the latter panel, 

 the first to be removed, had inadvertently been left submerged for 

 2^ months. The breeding season at this location appears to be from 

 April through November. The 8 test panels all showed an extremely 

 severe attack by Bankla gouldl . These panels had been submerged on 

 August 31, I9H, and the first panel was left submerged for 2 months. 

 Instead of the usvial one month. One block was removed at the end of 

 each succeeding month, so that the last one was submerged 9 months. 

 The test board record given in the following table shows the 

 extreme rapidity with which this marine borer attacked and destroyed 

 the test panels. 



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