1990 Canadian Sailcraft CS34 Shoal Draft
Sail #8268

1982 Catalina 22 Fin Keel
Sail #10506

1994 MUMM 36 ACE
Sail # 29206

Friday, October 25, 2013

CS34 Black Steaks on Hull

When in the water, rain water pools on the rear side decks of the CS34.  There is no where for it to go. The water pools to over an inch and drains out the holes in the aluminum toe rail.  The rainwater picks up something from the aluminum in the toe tail, a deposits black streaks down the hull.  These streaks are impossible to get off.

Black streaks at haulout
Notice how they only happen on the stern.  I have tried raw water, mild detergent (dish soap), deck wash chemical, and even Spray Nine.    Spray Nine takes it off, but it also take the wax off the hull that I worked so hard to put on!

Dockmate Dave lent me a bottle of 3M Sharpshooter Extra Strength No Rinse Mark Remover:

 
It takes the streaks right off:


Thanks Dave!

I feel this is a design flaw with the boat.  I notice that this happens on all CS Yachts: CS30/34/36/40.

When we were cruising east in 2012, I saw another same year CS34 that had scuppers on the decks to correct this problem.

Notice how the water still pools on the deck, but not enough to go through the holes in the toe rail.

Definitely will add these for next year!

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