1976, S2 7.0 Restore

Ruxing

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Aug 29, 2024
1
S2 7.0 Thunderbird
I'm about to begin Lovin on my 1976, S2 7.0. The original owner somehow dunked the bow at the slip, which soaked the balsa core and interior. The seller I purchased from completely removed the cabin and core. He also replaced all new plywood interiors and painted the hull.

I'll be installing marine grade plywood to replace the balsa. The bad part is I'll be doing this from the inside. I will be doing a complete rebuild of cabin, deck core, deck refinish, bottom coat, and standing rigging along with mast repaint. Basically a complete restore. I have questions about deck stiffening in crucial areas while I complete the balsa core restoration.

I have the stiffening covered while repairing (I think). Although, I am concerned about water drain off- not ponding. I also wonder what areas may benefit from some extra support? Since I am glassing, may as well do some mods.

I ordered the book The Elements of Boat Strength: For Builders, Designers, and Owners, Gerr, Dave. I also have the other ones by Don Casey, but they don't go into mods or improvements.

I have been debating doing all this because I will eventually be purchasing a larger boat. The way I look at this is 1) gaining experience 2) getting familiar with the boat 3) I can customize the interior the way I like 4) any mistakes I make during this process won't cost me much. I only paid $300 for it and the trailer. It has all the original sails and rigging, I believe. The cushions are in great condition and just need a good cleaning. This is also my first sailboat, but I have been on the water all my life. So if I bang her up, not much of a loss to me.

PS. I uploaded some pics of my Hoboat pallet mast cruches and billboard vinyl signs covering. The other pics I have questions about how to remove the rubber plug and is the caps in keel for draining and hpw is that removed?

Sorry for the bombardment of questions. Any help will be greatly appreciated! Thanks in advance!
 

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Jan 11, 2014
13,223
Sabre 362 113 Fair Haven, NY
Welcome to SBO.

There are a few YouTube channels that may be helpful with your project. First BoatWorksToday is an outstanding source for information about fiberglass, gelcoat, and painting. A few years ago Mads on Sail Life did a major refit on his boat, including rebuilding the interior and recoring the deck. Dan and Kika are in the middle of a major refit on their boat, check out their channel, Sailing Uma.

The photos you show have a couple of sketchy fixes that need attention. The screw in the side of the hull is a homemade Garboard drain plug. The plug is designed to drain water from the bilge during winter storage. It's not clear how the plug was installed.

Likewise, the plug for the shaft log seems a bit sketchy. It looks like this boat originally had a diesel engine, which has since been removed. The prop shaft would have exited the boat through the shaft log. If the plug fails, the boat sinks.

As for removing these two items, I'd start with removing the screws to see what happens. Since these are a prior owner's "better" ideas, it will take some experimenting to see. Look at the inside to see what's there. I'm guessing the shaft log has a dowel in it. It may be epoxied in place.