Table 1 3. Potential Profile of Mooring With Specialized Zinc Anodes 

 and Four Cables 15 Months After Relocation 



Reading 

 No.'' 



Potential (mv) on — 



Riser-Chain 



Leg 1 



Leg 2 



Leg 3 



Leg 4 



1 



-955* 



-880^^ 



-880^ 



-880^ 



-880'^ 



2 



-980 



-870 



-880 



-880 



-890 



3 



-980 



-995*^ 



-980'' 



-985'^ 



-990'^ 



4 



-980"^ 



-920 



-920 



-930 



-920 



5 



-880'^ 



-910 



-920 



-925 



-915 



6 



- 



-900 



-920 



-920 



-915 



7 



- 



-895 



-920 



-920 



-915 



8 



- 



-900 



-920 



-910 



-920 



9 



— 



-905 



-930 



-920 



-925 



10 



— 



-97 O'' 



-980'^ 



-ggo'^ 



-965'' 



11 



- 



-905 



-925 



-910 



-920 



12 



- 



-895 



-920 



-920 



-930 



13 



- 



-900 



-920 



-905 



-930 



14 



- 



-895 



-920 



-915 



-930 



15 



- 



-895 



-920 



-920 



-930 



16 



- 



-900 



-920 



-920 



-930 



17 



- 



-960'^ 



-970^^ 



-986'' 



-995'' 



18 



- 



-900 



-920 



-905 



-930 



19 



- 



-895 



-910 



-895 



-935 



20 



- 



-885 



-905 



-885 



-910 



21 



- 



-690^ 



-720^ 



-770"^ 



-655'' 



" Readings taken approximately every 10 to 20 feet. 



* At buoy. 



'^ At ground ring. 



At link on which anode was cast. 

 '' At anchor. 



Twenty-three months after relocation of the cathodicallv protected 

 mooring, the buoy was lifted from the water for its annual inspection. The 

 buoy and the entire riser-chain was hosed with seawater (Figure 16) to remove 

 the attached fouling organisms. The buoy had lost about half of its lower 

 fender from marine borer attack. There was very little coating damage 



34 



