ofmoderate in 19^5 resulting fron an Infestation in 19^^^ and slight in 

 1947. Limnoria were active at "both locations throughout the periods covered 

 "by the tests, attaining peak ratings of very heavy in 19^5 l^^t vere less 

 severe in 19U6; while in 19^7 > they again wei-e very heavy at the Fuel 

 Facility though light at the Naval Station. 



b. Fouling Organisms . Silt, algae, and invertebrate 

 animals "belonging to 5 phyla contributed to fouling of the panels. 

 The latter con^rised hydroids, encrusting and filamentous Bryozoa, serpulid 

 worms, barnacles and amnhipoda, miscellaneous nonborlng mollusks, and 

 tunicates. Of these organisms, hydroids, encrusting and filamentous 

 Bryozoa, serpulid worms, eind barnacles occurred with great frequency; 

 tunicates occurred with less frequency; while the occurrence of the others, 

 as well as the algae, was purely sporadic or occasional. 



5. Recent Addenda . The attack from the Teredinidae set in 19^ 

 rated very heavy at the Fuel Facility board, while that from the set of 

 the following year was only light. The Limnoria attack was heavy here 

 in 19hS and medium heavy in 19^9 • There was no evidence of Teredinidae 

 on the board at the Naval Station in 19^ and only a trace from the 

 19^9 set. Limnoria was medium heavy here in 19^ "but only slight the 

 following year. 



211 



