The Big Reveal! Glassed in Chainplate Removal 

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i always wanted to see old glassed in plates removed. It was a cheap and easy way for boat builders to do back in the day.

EVERY yacht owner, yacht refitter and especially EVERY YACHT MANUFACTURER should be made to watch your video. I'm still gobsmacked at what you found. Recently rebolted my 1979 S&S30 chain plates. The heads of most of the bolts fell off when I put a spanner near them 😳😳😳 but only those marked with 316SS were still in remarkably excellent condition. Methinks that the failed bolts were 304 bolts "accidentally" used when the yacht was built. At least mine weren't encapsulated although the previous owner had put gaffer tape over them where they were visible in the lockers. Arrrgh. Love what you're doing. 😎⛵

I have a suggestion for installing new chain plates. Start by removing all of the delaminated glass. Next grind the inside of the hull back to good glass. Then glass in some knees perpendicular to the hull. I would make the knees from something like Coosa board or solid fiberglass (maybe G-10). Make the knees around 1/2" to 3/4" thick and glass them to the hull with multiple payers of biaxial (non-woven) fiberglass fabric. Once you have the knees in cut slots in the deck for the new chain plates to pass through, insert the new plates and bolt them to the knees with stainless steel backing plates the same dimensions (thickness and width) as the new chain plates. You will need to rotate the new chain plates by 90 degrees and make some sort of cover plates for on deck (G-10 or stainless steel with slots for the chain plates to pass through). Seal the new deck penetrations with butyl rubber tape. This will move your rig an inch or so inboard, but that won't matter to the overall strength of the rig.

This was very interesting to see, learned a lot. You’re killing it bro, keep up the good work

Great job ... It's always a mystery of what is hiding behind the inner layers of the hull ... good work getting those out of the way ... now you can concentrate on setting up the new chain plates!!!

Wow, I was surprised how much rust you found!!

My chainplates are glassed in but they have an additional plate on the deck that fits over the plate and gets glued in. Has worked so far.

Glad that went as smoothly as it did for you! Amazing that she was sailing with that amount of deterioration!

To clean out core, put a small 90 degree allen wrench in the end of a drill.

A thought. Wherever on the deck core you have things fastened that need shear strength, which should be about anywhere anything is fastened, and where you probably have deck core problems, maybe do not use divinycell in that core area. But rather some water-resistant material with the highest sheer strength. Teak shear strength is around 1,300 to 1,900 psi and white oak as a shear strength of around 2,000 psi. To save weight over the entire boat though, perhaps use divinycell, which has nine timed less weight, but also nine times less shear strength that white oak, in non-critical areas.

Hey, may have been the lighting but your panel tabs looked like they where a bit dry but plenty strong for the application. I'll be interested on your chainplate replacement plans, you are going to get really good with laying glass.

the old "repaired" chainplate is... interesting!

What a mess. But external chainplates corrode too. Id look at the Mack Yacht Services RU-vid videos and and see how they glass in the new chainplates. Thats their specialty.

What's your plan for FG work in the winter months? Just thinking ahead about how it's gonna set up when it's 35-40 during the day.

is there a bow chainplate also?

🦭🦭🦭