Section 7 

 BOSTON, MASSACBHSETTS — BOSTOff NAVAL SHIPYAKD 



A7.01 Location of the Teat Stations aiid Test Boards 



Four test 'boards of the panel type were installed at different 

 locations at the Boston Naval Shipyard at Boston, Massachusetts. The 

 first, designated "by the symbol USNB-l, vas installed at Pier 9 at the 

 Navy Yard on June 15, 19^. The second, designated "by the symbol USHB-2, 

 was installed at Pier No, 7 at the U. S. Naval Drydocks at the South 

 Boston Annex on June ik, l^hk. The third, designated "by the synibol 

 USNB-3, was installed at the Lockwood Basin in East Boston on June l6, 

 IShk. Because of severe previous attacks "by Limnorla in test hoards 

 maintained at the adjacent U. S, Army Base In South Boston, especially 

 at the outer (eastern) end, an additional test "board designated as 

 USKB-lj- was installed at the East Jetty, at a moire easterly locaticm than 

 Pier No. 7 at the U. S. Naval Drydocks, on May 29, 19k6. All test "boards 

 were hung inside the piers for protection against damage, and all loca- 

 tions were in the vicinity of untreated wood piles. On January l6, 19h6, 

 it was reported that the test "board at the Lockwood Basin had, "broken 

 away and, as It was not recovered, a new one was installed on I&rch 1. 

 The results from these test "boards, the operation of which is still 

 "being continued, have heen summarized to the end of 19^1-7. 



A7.02 Bydrographic Data 



1. Test Board No. 1 . The depth of water where this test "board 

 was Installed was 20 ft from mean low water to the mud line, so that 

 panel C was 15 ft "below mean low water. The range of tide was given 



as 10 ft and the strength of ciu-rent as tidal (1^8o ft per hr at half el3"b 

 tide sxirface flow). The monthly records of teiig)eratures and salinities 

 of the water for the diiration of the test are given in tahles following 

 this, section. In regard to pollution, it was stated tliat there was a 

 slight 'film of oil on the surface and waste from "berthed naval vessels 

 at this and adjacent piers. On March 15, 19h6, it was reported: 

 "Escort carrier "berthed on east side; crew of 550 men; sanitary over- 

 "board; gar"bage on shore; heavy slick of oil "between piers." 



2. Test Board No. 2 . The depth of water where this test "board 

 was installed was 18. 5 ft from mean low water to the mud line, so that 

 panel G was 15.5 ft below mean low water. The tidal range was given as 



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