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Old 04-16-2014, 05:18 PM   #34
fstbttms
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City: Under a boat, in a marina in the San Francisco Bay
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Quote:
Originally Posted by jwnall View Post
Why is that? Something to do with the pressure washer being underwater? (Not arguing whatsoever -- just trying to learn something.)
In order for the pressure washer to overcome the ambient water resistance and be in any way effective, the tip of the wand must be placed very close to the surface being cleaned. At this distance, the water pressure is extremely high and difficult to control. Not only are you likely to blast paint off the hull but you may very well gouge the fiberglass. Don't even think about doing it with wood.
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