[QUOTE=catherder;90628]US Navy ships have to comply with the Uniform National Discharge Standards (UNDS) which cover a variety of shipboard discharges including hull leachate (AF paint that sloughs off, and/or the compounds it releases to the surrounding water).
It’s a work in progress, but I can assure you the Navy can’t just put anything on their bottoms anymore, especially considering the complexity of US law regarding removing same in US shipyards, which are governed by OSHA regulations and are all situated in waters governed by the US EPA. So, no more TBT or other forbidden AF ingredients on Navy bottoms. At least not until they manage to offshore all Navy drydocking to places like Vietnam, Singapore, South Korea and the Philippines.
To add, I have some personal experience with Intersleek paint. Very expensive, needs careful prep, is easy to damage, needs at least 24 hours out of the water to cure, and is not for ships that sit around. Fouling will grow on it, but speed will remove the fouling. Supposed to be easier to scamp, too but I haven’t spoken to any divers lately so I can’t attest to that.
Five years ago, it came out to around 400-450 bucks a gallon, and I think that included the special primer. We painted an LMSR with it, including the CPP blades. That same ship is back in the yard, getting another shave and a haircut. The pics I saw looked pretty clean prior to sweep blast but they may be going with a different AF this time. Anyway, the paint job came out to I think, a million and a half. Maybe the earlier poster who was a paint rep can update us on the price? Dunno if I’d use it on a recreational or fish boat though.
But it’s hella cool once on. Feels slick and rubbery! And it was the most gorgeous blue.[/QUOTE]
Yep, slick and rubbery, kind of like a smooth layer of silicone sealant all over the bottom. I haven’t been in this business since '06 but 4-450/gallon sounds about right for back then, certain to have increased in price some more, raw material costs were skyrocketing due to China buying everything they could get their hands on.
The largest customer for this product now is actually power plants, or other industries with large water intake requirements. Raw water sea chests and gratings would be a good candidate for the product.
One of the companies I represented was Chugoku Marine Paints. Japanese obviously with no large presence in the US market but enormously well respected in the blue water international scene. They actually develop and ‘license’ a lot of their technology to more marketable US companies (hint: Intersleek). They have a copper free, [U]true self polishing [/U]AF called SeaGrandPrix CF 10. If your boat is continuously moving, this would be good bottom paint, not recommended if you spend more than two weeks dockside at a time.