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ftworthsailor
Captain

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USA
279 Posts

Response Posted - 03/14/2013 : 15:26:27

Thanks for the advice. I will look into doing that for my boat, too. Since it will be 95% fresh water with a yearly run to the gulf coast, do you think the magnesium will suffice?

Edited by - on

Stinkpotter
Master Marine Consultant

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Djibouti
9081 Posts

Response Posted - 03/14/2013 : 18:37:29

Magnesium will tend to self-destruct more rapidly in salt water, but in so doing it will protect your cast iron even better than zinc--just for a shorter period of time, and when returned to fresh water, it may have created too much of an oxidation layer to be effective. Aluminum (such as Navalloy) might be a better choice for use in both fresh and salt water.

Edited by - on

Tomas Kruska
Admiral

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Czech Republic
522 Posts

Response Posted - 03/15/2013 : 02:58:41

I have VolvoPenta (aluminum) saildrive with two magnesium anodes. One ring on leg itself and one ring on the folding propeller. Even all these parts are galvanically connected the anode on propeller is disappearing more more rapidly and the one on saildrive seems untouched.
It seems its common on these saildrives as the other mate in our marina has the same "issue".
I'm sailing only on frash water.

Edited by - on

ftworthsailor
Captain

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USA
279 Posts

Response Posted - 03/27/2013 : 19:13:10

Another task done: Repaired the damage to the deck area under where the pulpit bolts down. Here is a before shot:

As you can see. the pulpit was pulled completely off the deck. Here is the decking after we installed a stainless steel plate, and fiberglass work to repair the deck. The guy that does this work is really, really good ! !

Just need to drill and install the pulpit. THen its time for BOTTOM PAINT! Lots of sanding and prepping, then gotta buy a gallon or so of some good bottom paint.

Edited by - ftworthsailor on 03/28/2013 17:35:14

Stinkpotter
Master Marine Consultant

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Djibouti
9081 Posts

Response Posted - 03/27/2013 : 20:05:21

Hi Roy... Looks good! It appears from your photo that the stem fitting (chainplate) is the original that mounts to the deck. Later, Catalina added a tang that extends under the rub-rail and down the bow, with a couple of bolts through the bow. This significantly increases the strength against the upward pull of the forestay. (Wonder why?

) You can sorta see it here on the bow of my '85...

Catalina Direct has the new version, I believe both with and without an integrated anchor roller. Given the damage (and repairs) to your deck in that immediate area, it might be worth considering.

Edited by - Stinkpotter on 03/27/2013 20:12:12

ftworthsailor
Captain

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USA
279 Posts

Response Posted - 03/27/2013 : 20:45:20

Thanks, Dave. I will look into getting one before I proceed with raising the mast.

ps. Yikes!! They are not cheap!

Edited by - ftworthsailor on 03/27/2013 20:51:46

Stinkpotter
Master Marine Consultant

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Djibouti
9081 Posts

Response Posted - 03/27/2013 : 21:37:17

Check the one without the roller. (...although integrating that probably enhances the strength for both the roller and the chainplate.)

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Tomas Kruska
Admiral

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Czech Republic
522 Posts

Response Posted - 03/28/2013 : 08:17:31

Roy, the same happened to me but I've fixed it before the top fiberglass gets ripped [url="http://www.kruska.cz/C25_High_Anxiety/Anchor_locker_repair/index.html"]check here[/url].

Nice repair.. one more C25 saved

Edited by - Tomas Kruska on 03/28/2013 08:17:56

bigelowp
Master Marine Consultant

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USA
1778 Posts

Response Posted - 03/29/2013 : 18:46:40

That appeared to be an excessive "Catalina smile" so it is good you dealt with it professionally. Mine was nowhere as bad but I had the hull stripped, barrier coated last season. By the end of a relatively low use season (note: my boat is at a mooring so their is more movement) it appeared that the smile on the leading edge was slightly visible (then again I may be focusing too much) The yard claimed the bolts and wood are good so I am confident, but . . . . flex does take place and the smile is a design issue so don't despair!

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The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.