Section ill- 

 PORTSMOUTH, VTRGHrTA — WCEFOLK NAVAL 'SHIPYARD 



JUXD 

 UCEFOLK, VIRGINIA — U. S. KAVAL OEERATHSfG BASE 



All»-.01 Location of the Test Statlcne and Test BoardB 



Test "boards of the panel type vere laastalled at the Hcxrfolk 

 Naval Shipyard at Portsmouth and at the U. S. Nayal Operating Base at 

 Norfolk, Virginia, on June l6 and July 5, 19^* respectively. The "board 

 at the Norfolk Naval Shipyard was designated as USRN-l. No details as 

 to the location of this test hoard vere given. Since all piling in use 

 here is creosoted, it vas not posslhle to locate the hoard in the vicinity 

 of untreated piling. Instead, it was located near creosoted piles which 

 were driven in I907, and it was assumed that the value of the preservative 

 has heen greatly reduced, as marine horers have damaged the piles to a 

 conslderahle extent. 



The other test hoard, designated as UE!HN-2, was Installed at the 

 Navy's Convoy Escort Base on the west side of Hn.Tiiptan Boulevard, ahout 

 one mile south of the Naval Operating Base proper. It was suspended 

 from the outhoard end of Pier No. 23, which extends Into the Elizaheth 

 River 750 ft from the hulkhead line. This location was selected because 

 it is the only one which has water deep enough to permit completely suh- 

 merglng the test hoard and keeping it ahout 2 ft ahove the hottom; also, 

 it was the only location at which the hoard could he installed reasonahly 

 near vDa,treated wood piling. Pier No. 25 is 50 ft in width, and at each 

 of the outhoard comers are clusters or dolphins of untreated oak piles. 

 The test hoard is ahout 11 ft from one of these clusters. 



In December 19^6, it was reported that panels 6, T, and 8 of this 

 test hoard (UiSHN-2), which were scheduled for removal In one, 2, and 5 

 months, respectively, were in a had state of deterioration, and that it 

 appeared douhtful that they would he in place on the dates scheduled for 

 their removal. It was therefore requested that the S-month period of 

 suhmergence he reduced to k months. Accordingly, these panels were 

 removed on Decemher 16 and sent to the Lahoratcxry; a new test hoard was 

 installed on a new ij-month program on January 7, 19^7. 



6k 



