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W.V.V. 



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2b& 



Figure 1.3 In free-association paints, the TBT molecules are leached from 

 a permeable matrix by seawater percolating through the paint. 



Steel Hull 

 /, -^ 



Paint 

 Surface 



Biocides 



35-40 microns- 

 Ablative Layer 



Figure 1.4 Ablative paints use a less permeable matrix that gradually 

 flakes off exposing new leaching surfaces. 



1-7 



