Seaway 23 stringer replacement

wiggy

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Aug 26, 2012
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Carlisle PA, Chesapeake Bay
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Seaway 23
Thought I'd post a pic of my progress. I've removed the rotten stringers and next week after some more grinding and cleaning I'll be adding a chop mat and 1808 before adding two 4"x10" foam stringers from Prisma. The plan then is to re-deck with more glass and coosa. I'm also converting the transom back to a outboard notch. The previous owner converted the boat to an inboard but did a really poor job so I've decided to go back to an outboard. I'm debating replacing the transom with coosa, sort of a "while-I'm-in-there" situation. I don't see a lot of rot but the idea of there being no wood left in the boat is very appealing. I'll post some more pics when I start glassing and installing the foam stringers. Compsys (the people that make Prisma) have been really great to deal with and their product seems like it will be cheaper and easier to use than Coosa stringers and only a few more dollars than marine ply when you consider the glass lay-up costs. After the glasswork is done, my winter project is to make a teak windshield in the woodshop. Anyone know if theres a bass boat windshield pattern out there? There are a few more pics in my folder if you're interested.

wiggy-albums-seaway-project-picture329-you-can-see-where-original-outboard-notch-stern-ill-start-cutting-back-out-once-floor-has-been-ground-clean.jpg
 
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JimRP31

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tiverton RI
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Willis Beal/RP 31
The more pics the better. I think the while your attitude is the way to go. Replacing the transom now is the way I would go.
 

wiggy

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Aug 26, 2012
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Location
Carlisle PA, Chesapeake Bay
Boat Make
Seaway 23
Poject update

Finally finished some more work on the boat. The stripers were in the Indian River Inlet down in Delaware so I'm a little behind. Got the hull cleaned out with a grinder.
wiggy-albums-seaway-project-picture332-after-20-hours-grinding.jpg

Also realized the transom has to go. If you look in the outside transom pic you can see where water is weeping out of a poorly plugged hole. The boat is ironically named "A Tight Seal."
wiggy-albums-seaway-project-picture336-previous-owner-called-her-tight-seal-apparently-not-too-tight-you-can-see-seeping-lower-portion-transom.jpg

Any tips on chopping out the old transom wood would be appreciated. Looks like I'll be spending more quality time with the Fein saw. There are also two pics of the rotten balsa core I cut out of the hull.
wiggy-albums-seaway-project-picture333-rotten-balsa.jpg

wiggy-albums-seaway-project-picture334-closeup-rotten-balsa.jpg

It looks like the previous owner added them to support around the prop shaft. Although they may have been put in originally by Seaway.
 
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wiggy

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Aug 26, 2012
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Location
Carlisle PA, Chesapeake Bay
Boat Make
Seaway 23
Transom Cut-out on Seaway 23

Had a little time after work today so I got out the sawzall and started on the transom. I cut out the section I wouldn't need with the outboard, no sense in removing all of the core from a section I wasn't going to use.

wiggy-albums-seaway-project-picture337-transom-re-notch.jpg
 
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SHORT STEP

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Apr 9, 2012
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w/ma
Boat Make
Tripp / midland
yes I looked at it on fri but the owner said he promised you a chance as you were 6 hrs away .
it sure needed a total rebuild , the previous owner sure hacked it up
gooog luck , keep us posted
bob
 

wiggy

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Aug 26, 2012
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Location
Carlisle PA, Chesapeake Bay
Boat Make
Seaway 23
Update on the transom and stringers

I got the transom glass peeled off today. Glad I went in, it's rotten, of course. The inside came off in one piece so I can use it as a pattern. Hopefully I'll get things cleaned up tomorrow with the grinder. Its getting colder in PA and I'm installing a new thermostatically controlled heater in the garage that should help with getting my resin to cure properly. My new foam stringers arrived this week as well. I've got some patching to do and then I can core and glass the transom. Then I'll get started on the stringers. The Prisma stringers look great, the company was really good to work with, and the price when you add in the cost of glass and the simpler install make them a pretty good value. If you look in the last pic you can see where the original notch was for the outboard.
wiggy-albums-seaway-project-picture343-layer-glass-peeled-transom.jpg

wiggy-albums-seaway-project-picture344-my-pattern-new-transom-core.jpg

wiggy-albums-seaway-project-picture345-ripping-out-rotten-wood.jpg
 
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wiggy

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Aug 26, 2012
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Location
Carlisle PA, Chesapeake Bay
Boat Make
Seaway 23
Seaway Project Update

I made some progress on the Seaway last weekend. My family has a Christmas tree farm and gift shop and this is our busy season, so I won't make too much progress until after Christmas

wiggy-albums-seaway-project-picture381-patch-backing-cardboard-wax-paper.jpg


I had some holes to patch, so I made a patch backing using cardboard and waxpaper.

wiggy-albums-seaway-project-picture384-hole-path-backing.jpg


I just duct taped the backing to the outside of the hull

wiggy-albums-seaway-project-picture380-thru-hull-hole-cleaned-ready-glass.jpg


I then cleaned out the holes. In this case it was an old thru-hull hole. I tried to create a nice chamfer so that there was plenty of surface area for the resin to adhere to the old glass and resin.

I then made a bunch of concentric patches from some glass cloth and chop and filled the holes.



After the holes were filled, I leveled some spots with resin and cabosil.
The first layer of mat went smoothly over the hull bottom and now I'm ready to start a layer of 1708.

wiggy-albums-seaway-project-picture383-1708-bi-axial-ready-lamination-over-layer-chop.jpg


After I get that finished, I'll add a layer of fresh glass and resin to the transom and stack two layers of 3/4" Coosa Bluewater 26 in before adding more glass.

After all of that, I finally get to try the Prisma foam stringers that I'm anxious to glass into place.

I still have decided what I'll use for the deck composite. Maybe a less dense Coosa in 1/2" and some more 1708 or another structural foam and glass. I'd love to find an alternative to Coosa as it's so expensive.
 
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Tunascapes

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Oct 4, 2011
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Mass Bay
Looks good. I don't think you are going to get a solid enough deck with 1/2" unless you do a few layers of 1708 on both sides. At that point it's probably a push on money just to do 3/4. I tried to get away with 1/2 on my 19 seaway and it was way to much flex for me.
 

wiggy

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Aug 26, 2012
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Location
Carlisle PA, Chesapeake Bay
Boat Make
Seaway 23
Coosa deck

Looks good. I don't think you are going to get a solid enough deck with 1/2" unless you do a few layers of 1708 on both sides. At that point it's probably a push on money just to do 3/4. I tried to get away with 1/2 on my 19 seaway and it was way to much flex for me.

I was afraid of that. I hate decks that feel like trampolines. I'll have to go thicker. For some reason, the prices on Coosa keep goin up and up and up, at least around the Chesapeake. Thanks for the advice, I'll break out the piggy bank and go with 3/4
 

joman

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Oct 18, 2011
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The boat looks nice,what size moter did you decide to repower with?
 
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