zinc

Hi Folks, I've been impressed with my 356 and the engineering involved. But, I do have one problem. The thru-hull for the engine water inlet is slowly corroding. The other thru-hulls are bonded to a submerged zinc mounted in the hull. They show no signs of corrosion. But, the engine water...

I recently read a article in Sail magazine about tools you should have on a boat and it noted that the product Kopr Shield is a "conductive grease for battery connections and to seal engine zincs." I have a Yanmar 3GMD on my boat and it is a raw water cooled engine that has two plugs in the...

I bought my 2004 First 36.7 last September, and it spent the winter in the water. I hauled Monday and see that the zincs need replacement. But I'm confused about which to get and the boats user manual was no help. The engine is the MD2030 and I'm pretty sure the saildrive is the 120S. I have a 2...

I have a Hunter 240 water ballast that is kept year-round in the Marina at Great Salt Lake Utah. When I pulled out last year to replace the keel downhaul line, I discovered that the line did not need replacing, but that the keel bracket, pins and bolt were extremely corroded. It was suggested...

Does anyone know the size of a zinc for an Oceanis 321? Could be 22/24, 30, 35mms or other.

Hey everyone, I have a 1997 336. It has a 1" shaft and I put one zinc on it. Should I put more than one? I'm replacing it every two months because it is eroding so quickly in the marina. I have briefly spoke to a few people that suggest a galvanic isolator should be installed. I currently do...

1973 Catalina 22, Hull 2556. When I have my bottom cleaned, what zinc should I send down with the diver to replace the existing zinc? Any suggested instructions for bottom cleaning and inspection? 1) Keel attachment to hull. 2) Keel raising cable and attachment. 3) Thru hull fittings. 4)...