"John W. Bienko" wrote in message

I have a set of fenders.. white with blue tops and bottoms..
the tops and bottoms are coated with a dark substance..
I seek advice as to how to clean them.

Marinco, the shore power cord folks, make a product for cleaning their power
cords. It also works splendidly on lifelines, fenders, and just about any
other soft, high-density plastic. Takes some elbow grease, but the results
are great.

I've also used Soft Scrub and fine Scotchbrite pads with acceptable results.

Max