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post #8 of Old 03-22-2019
Fstbttms
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Re: Keel Crab hull cleaning drone

Quote:
Originally Posted by Minnewaska View Post
It can't be a State-wide rule, as my prior marina did permit divers. I understand there are many pressures put upon marinas by the Department of Environmental Management. I think each marina negotiates what they can and can't get done by when.
It is likely a knee-jerk reaction to an issue the marina management do not understand. For instance- your anti fouling paint is pumping its copper or zinc biocide into the water 24/7/365 whether or not the hull is being cleaned. Further, multiple studies have shown that the amount of copper contributed to the water column by in-water hull cleaning activities is very small, just a fraction of what comes off the hull through passive leaching. And nobody seems to consider the increase in fuel consumption and hydrocarbon emissions that occur when boaters motor with a dirty hull.

Usually in instances like this, the marina is attempting to comply with the 100% voluntary Clean Marina program, which is used in many states, including Rhode Island.
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