Sounds like Polymites in a feeding frenzy just before their breeding cycle. Best have your boat lifted and treated for polymites as if left untreated these little creatures can and will chew their way through FRP. They particularily like polyester based GRP but are also known to chew epoxy. You should also tell the owners of the boats moored around you that you are infected so they can have their boats treated as well and in the meantime fly flag "D" to warn other boats to stay clear.

---------------------

Artificial Intelligence is no match for Natural Stupidity