Zincs for a Catalina 30

[bbdbak]

I have a new (to me) 1978 Catalina 30, that I plan to have a diver inspect and replace the zincs. Can anyone tell me what zincs I need to have on hand for the diver, other than the 1" shaft zinc. What size, configuration, and location. I will have it hauled out and repainted this winter, but don't want to wait that long for the zincs.

 

[LeslieTroyer]

You may or may not have a 2-3" flat round bolted to the skeg
http://www.boatzincs.com/rudder.html
Les

 

[The Garbone]

Our 78' only has the one on the shaft.

 

[Coriolisbc]

I have two on the shaft, and one 3 inch flat round ( two sides). they only last a year. Change the heat exchanger zinc at the same time.

 

[fstbttms]

The only other anode your Catalina 30 will possibly have (besides the shaft anodes) is an R-2 rudderplate (2 3/4" diameter) or an R-3 rudderplate (3 13/16" diameter.) These would be mounted on the strut. They both use the same fastener, so either can be used in place of one another.