The bow thruster was made by key power. There was a design change that affected the zinc around 2002. The older thruster had a flat plat zinc behind the propeller, which required removing the prop. The newer ones have the zinc as part of the prop nut.
2006 Camano 31 bowthruster make and anode part number
Reporting Back
bow thruster is a Kobelt, Made in Surry BC Canada
Anode - from a standard Mercury Outdrive
Matyr C55989a/m/z a= Aliminuim(brakish), m=magnesium(fresh), Z= zinc (salt)