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Old 18-09-2023, 15:33   #16
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Re: Grinding away galvanized Rocna

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Originally Posted by Jammer View Post
On a boat that size a suitable Rocna is not expensive. One might just as well declare that someone is destroying the value of a foresail by having a window put in it. The boat has to work as a system.

Last I checked your life isnít at risk with a compromised headsail. The integrity of your ground tackle is of paramount importance and can save your life, and others. That was the point, not the dollar value of a Rocna.
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Old 18-09-2023, 15:52   #17
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Re: Grinding away galvanized Rocna

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Definitely agree.

Is there anything wrong with putting the anchor in your trunk? Your truck bed? The cabin of your boat?

itís pretty doubtful youíll need to deploy the anchor while you are going down the highway lol
LoL. Heíd run out of scope pretty quick.
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Old 18-09-2023, 15:53   #18
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Re: Grinding away galvanized Rocna

What size boat?

What size anchor?

How much are you removing and what shape?

If you answer these questions we might eliminate some of the doom and gloom predictions. And guys, remember this is a trailer sailor, not a serious cruising boat. Not likely to be anchored on a lee shore in Patagonia!

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Old 18-09-2023, 16:56   #19
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Re: Grinding away galvanized Rocna

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Originally Posted by massnspace View Post
Fitting a small Rocna to a newly installed bow roller on my trailerable sailboat. Due to the way it mounts and the angled shank of the anchor, it doesnít fit correctly. I want a good fit as the boat will be going 60 MPH on the highway.

My idea is to grind away a bit of the anchor shank. Obviously this will remove the galvanized coating.

Is this a good idea? Will it rust there and spill rust stains down the bow? Paint the ground away area?

I guess I could have the entire anchor re-galvanized, but itís brand new and I also donít want to throw that much money at it.

Ideas?

David
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Man I can not believe (well I can) the responses this question produced. I assume you aren't a total idiot far as how much you are going to grind. Spray some zinc primer on the grind spot to maintain it.

Have you considered just tying the anchor to the bow to keep it tight?
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Old 18-09-2023, 17:20   #20
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Re: Grinding away galvanized Rocna

Ah... come on everybody. It's a TRAILER SAILOR. He's not anchoring in hurricanes. Or living on the hook for months.

I'm a fanatic about being careful and not taking un-necessary risks, but let's be a BIT realistic here. On these tiny little anchors the issue really is not strength, but weight. Grinding off a bit of steel will not be a huge deal for the application. But that doesn't make it a great idea...

To the OP: There is nothing under the galvanizing except steel. It's not "mild" steel, but it is steel. It will rust. The larger a surface area of steel you expose the faster and more it will rust. You can throw some cold galvanizing spray on there and reduce the rust, but that's a patch job at best.

I am guessing having a proper hot-dip re-galvanizing done will cost far more then the anchor is worth. Most shops will have a minimum charge. The last galvanizing shop I worked with it was about $400.

I really think there are better solutions to your problem. For a trailer sailor, you are pulling the anchor up by hand, I assume. Get a fortress out of aluminum and just lift it over the rail and stow it. Storage on the bow is really something better suited to bigger boats.
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Old 19-09-2023, 16:25   #21
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Re: Grinding away galvanized Rocna

While you are at it, chainsaw 6 inches off the keel so it fits better in the garage.
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Old 19-09-2023, 16:39   #22
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Re: Grinding away galvanized Rocna

Of course it's not a good idea. That doesn't mean I wouldn't do it.

Prime & paint the notch, use galvanizing spray, something- I doubt it's critical and it's easily renewed.

Try not to anchor in hurricanes ;-)
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