Have you looked into Silicon Bronze? With some bronzes, dezincification is a major concern, but not this this one, and I don't think crevis corrosion should be a concern with this. For vessel thru hull fittings, this is a choice alloy. Studies have shown that "sometimes" anodes have helped with...
Anodes attached on vessels have their straps placed 1/4" from the "hull" side of the anode surface, and 1" to 2" from the outer anode surface (depending on the thickness). This is because the anode consumption is from the outside surface areas in this application. If it were to consume from...
