Surface Brush Cleaning . Brush-Boat^ is equipped with a 6-m-long (vertical) 

 cylindrical brush and can be maneuvered about the hull of a ship (Figure 

 11). ' This vehicle cleans only to a depth of 4 m and, as presently 

 designed, is not considered a candidate for OTEC application. It is men- 

 tioned because it suggests possible use in combination with a submersible 

 for cleaning large exterior surfaces. 



Figure 11 - Brush-Boat Cleaning System 



R, 



Registered trademark of U.S. Phosmarine, Inc , 



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