Section kQ 

 PEABL HAEBOE, HAWAII -- PEAEL HARBOR KAYAL SHIPYARD ' 



A48.Q1 Location of the Test Station and Test Boards 



Four test toards of the panel type were installed July 5 and k, 19hk, 

 at different locations at the Pearl Harljor Naval Shipyard, Pearl Harhor, 

 Hawaii. This harhor is located on the south side of the Island of Oahu. 

 The first of the "boards, designated hy the symbol DSHH-1, was placed under 

 a marginal tlmher wharf (Berth A-12) located near the entrance to the 

 harhor. This new wharf is constructed of creosoted piles and tlnibers. 

 The iest hoard is located 6 ft inside the fender system and 5i- ft from the 

 nearest pile. The second hoard, designated hy the symbol USIIH-2, was 

 placed under the so-called "1010 Wharf" (Berth B-l) which is of concrete 

 construction. The fender system on this wharf is constructed of treated 

 tlmher extending from deck to water line. The test "board is located 

 6 ft from the fenders. The third board, designated hy the symbol DSM-J, 

 was placed under a marginal wharf (HE wharf. Berth IE-5), about one -half 

 mile upchannel from the first test board. This wharf had been in place 

 for about one year, and all submerged members were heavily encrusted with 

 "barnacles ajid other marine growth. The timber piles were creosoted. 

 The test board was located 6 ft inside the fender system and 5 ft from 

 the nearest pile. The fourth board, designated by the symbol DSMH-i)-, 

 was placed under the Fuel Oil Pier (Berth H-2) at Kuahua. This pier is 

 of concrete construction with a spring-type fender system of creosoted' 

 timber, which does not project into the water. The test board was 

 placed 12 ft inside the fender system. The operation of these test 

 boards is being continued, and the results have been summarized 

 to the end of ISkl. 



A14-8 . 02 Hydrographic Data 



1. DSHH-l (Timber Wharf ). The depth of water where this 

 test board was Installed was 40.2 ft; the tidal range was given as 



3 ft (from -.5 "to /2.5 ft); the velocity of the current was negligible. 

 The temperature of the water at the time of installation was 78° F. 

 Pollution of water by sewage and wastes varies with the quantity of 

 shipping and anchorage. As an average, little if any evidence of influence 

 on no r m a l coMltioris was apparent from these causes. In fact, 

 pollution by sewage wastes and oil was considered negligible in general 

 throughout the period covered by the tests. 



2. PSM-2 (1010 Wharf ). The depth of water where this test 

 board was installed was 29 ft. The tidal range and temperature of the 

 water were the same as given for test board USM-1. There is usually 

 an oil film on the surface of the water at this point, and considerable 



225 



