Section 50 

 PALERMO, SICILY, EEALY — U. S. HAVAL OPERATIHJ BASE 



A5O.OI . Location of the Test Station and Test Board 



A test 'board of the panel type was Installed August 21, 19^ » and 

 operated until September 2k, 19^5> at the U. S. Naval Operating Base at 

 Falormo, Sicily, Italy. No Infozmatlon vas given as to the location of 

 this test "board other than that it vas in a basin at a shipyard operated 

 in Palermo Barljor. It vas designated by the symbol USN5I-1. The operation 

 of- this test 'board vas discontinued because of the curtailment of military 

 activity at this Base. 



A5O.O2 Bydrographlo Iteita 



The depth of vater at the location vhere the test "board vas installed 

 vas 15^ ft; the tidal rangei vas 8-5/^ in. ; as the "board vas in a "basin, the 

 cuxrent vas zero. The teinperature of the vater at the time of installation 

 vas ^9^ F. A p9llution test showed positive presumptive, coliaerogenes 

 Isolated. 



A5O.O5 tfarlne Borers 



1. Teredinldae . Teredinidae t including Teredo ( Psiloteredo ) sp. 

 and T. ( Lyrodus ) sp., vere active throughout the period covered "by the test. 

 They occurred in all except one of the 1^ control panels, "being mostly 

 embryonic "but ranging up to 8 mm in length in the panel su'bmerged from 

 June 2^ to July 2k, 19k3* The naoiber of specimens recorded ih any one 



of the control panels varied from a fev to approximately ^t-OO. The "breeding 

 season at this location extended from the middle of January to the middle of 

 December. Teredinldae occurred in all the test pemels. Six of the panels 

 su'bmerged on August 21 and one su'bmerged on September 21 in l^kk "became 

 riddled after having "been su"bmerged from ^ to Q months, and one submerged 

 for 8 months vas one-third destroyed. The rate of grovth is indicated "by 

 the fact that, vhlle the Teredinldae vere embryonic in the test panel 

 removed at the end of one month, they attained lengths up to ^ mm in the 

 one removed at the end of 2 months, up to 88 mm in the one removed at the 

 end of 3 months, up to 90 mm in the one reimoved at the end of k months, cmd 

 up to 100 mm In the last one removed at the end of 8 montjis. The attack 

 rated very heavy in both 19l|'l». and 19'*-5« 



2. Ljmn^la. L1winf>ria Vere very active throughout the period 

 covered "by "the test. This crustacean borer occurred on all except one of 

 the control panels, the tn«T^™™ nuniber recorded on any panel "being from 



100 to 110, They occurred on all the test panels, vhere, vlth one exception, 

 there vas a steady Increase in numbers from 1^ in the first panel su'bmerged 

 for one month to from 80 to 100 per sq. in. (10,500-15,200), including the 

 associated Chelura t in the next to the last panel su'bmerged for 8 months. 

 The last paoel vas riddled. The attack thus rated very heavy in 19't-5* 



15^ 



