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Deck Hull joint integrity ?
Posted:
Sat Jan 25, 2014 10:05 amby Topi
Our new Top Hat Mark 1 has no timer strip on the toe rail, it was removed with the intention of placing on a rubber strip instead. I noticed that there are lots of holes through the GRP tongue where the timber mounted. Are these screws that hold the timber strip on also part of the integrity of the hull to deck joint ? I know there is also adhesive used and the inside cabin the joint is fiberglassed taped as well.
If the screws are not structurally required then I will probably opt for adhesives for the rubber with just the occasional screw. If they are structural then I had better revise the plans.
Re: Deck Hull joint integrity ?
Posted:
Sat Jan 25, 2014 3:02 pmby Phillip
Topi,
Mark 1's usually have the joint covered by a strip of SS which is pinned and the pins roved over, ie permanently!
Look here.....
- Seaka's bow.
- DSC03165a.jpg (125.57 KiB) Viewed 5548 times
If there are any gaps you should seal them off with fiberglass resin befor you apply another rubbing strip.
Re: Deck Hull joint integrity ?
Posted:
Sat Jan 25, 2014 3:10 pmby Topi
Wow, it has nothing like that. Just GRP.
Note the old bit of teak bump strip in the photo, that is the only bit remaining, It was left there as a sample of what was.
Re: Deck Hull joint integrity ?
Posted:
Sat Jan 25, 2014 3:20 pmby Phillip
Mmmmmm..
That photo sort of changes the story.
Do you know who built your Top Hat and WHEN?
Re: Deck Hull joint integrity ?
Posted:
Sat Jan 25, 2014 4:27 pmby Topi
No Idea, a survey report says 1976, but I do not know where he got that from.
Re: Deck Hull joint integrity ?
Posted:
Sat Jan 25, 2014 7:12 pmby Phillip
Topi,
That will mean that your Top Hat is one of the six or eight Mark 1's that were built by Formit, most probably in 1972,
unless someone made a special order in 1976, but I doubt that very much.
This would also explain the timber rubbing rail and the other diferences I have seen to your deck layout.
I would be interested in seeing a photo of the rail that supports the forward locker boards.
This is what Seaka's looks like.
- locker rail forward Mk1
- Mk-1-longitudinal-rib-2.jpg (394.48 KiB) Viewed 5530 times
Re: Deck Hull joint integrity ?
Posted:
Sat Jan 25, 2014 7:39 pmby Topi
The ungelcoated bit in the photo, is that the hull below water level or is that part of the deck to topsides join ?
1972 edition. That is a start. The guy doing the boatcode asked about the maker and I had no idea, nothing written anywhere either.
Re: Deck Hull joint integrity ?
Posted:
Sat Jan 25, 2014 7:59 pmby Phillip
Topi,
Its inside the forward cabin.
- Forward cabin of Seaka
- Mk-1-longitudinal-rib-1.jpg (446.31 KiB) Viewed 5522 times
Re: Deck Hull joint integrity ?
Posted:
Sat Jan 25, 2014 8:07 pmby Topi
Ok a photo of that is now on my list for Sydney.
Re: Deck Hull joint integrity ?
Posted:
Sun Jan 26, 2014 8:16 amby storm petrel
Topi,
Sure it is not a Mk11? They were built and sold from November 1972 by Formit and had a teak toe rail screwed to the gunwale. Or perhaps it was one of the Mk1s made at Formit as Phil suggests because they used the timber toerail on the Mk2s they built and may have tested the idea on the few Mk1s they built.
Cheers,
Mark
(Mk11 )