MONTHS 



SITE 1 



SITE 2 



SITE 3 



SITE 3 



SITE 4 



SITE 4 



CUMULATIVE 



PANELS 



PANELS 



BOTTOM 

 CYLINDER 



STAKES 



PANELS 



BOTTOM 

 CYLINDER 



1 



360 



21 







30 





2 



390 



2,085 







67 





3 



2,505 



2,050 











4 



1,930 



1,800 







525 





5 



980 



1,445 



3,065 



202 







6 



962 



968 







320 



5,060 



7 



566 



1,650 











8 



290 



1,735 







VALUES ARE NUMBERS 







9 



224 



1,748 







OF BARNACLES / FT2 













10 



225 



1,280 











11 



183 



1,030 











12 



117 



1,050 











INTRODUCED 



APRIL 



JUNE 



JUNE 



JUNE 



MAY 



MAY 



TABLE 1 COMPARISON OF 1 THROUGH 12 MONTH CUMULATIVE 

 BARNACLE FOULING FOR VARIOUS TEST SURFACES. 



information, provided a means of comparing data between the bottom 

 and the height of the test panels. The differences in set in relation to 

 test object shape is very great as shown in the layer 6 inches above the 

 bottom in Figure 16 where barnacle set on the bottom test cylinder is 

 about 70 times as great as that on stakes for Sites 3 and 4, and again at 

 12 to 18 inches above the bottom where test cylinder barnacle set is 

 only 2.4 times as great as that on the stakes. 



Short term fouling tests using bottom cylinders and stakes are 

 presented for comparable periods for Sites 1, 2, and 4 panels in 

 Figure 17. Barnacle fouling was found on all test objects and is 

 presented in the figure in relative magnitude to other fouler s. Similar- 

 ly, barnacles and other predominant foulers are shown in Figure 18 

 for all panels of 1 through 6 months for Sites 1 and 2. 



Periods of barnacle attachment, maximum attachement, and most 

 rapid growth are shown in Figures 19 and 20 for Sites 1 and 2, 

 respectively. The most favorable periods for introducing structures 

 and equipments affected by barnacles are presented in Figures 21 and 

 22 for Sites 1 and 2, respectively. 



17 



