Maree III sharpie 10 Rater

Started by steve-d

7 updates 15 likes 11 comments 0 followers
steve-d Opening post

Maree III sharpie 10 Rater

Maree III is a 10 Rater Sharpie design by A Wilcock dating back to 1958. MM plan MM/504.
I first built her in 1996 but as with all these things family life got in the way or changed and I stopped taking her out. At some point I must have sold her but I can’t remember how or when.
A few weeks back I decided to build something again and found the original plans under the bench so where better to start than there. I also found the MM Plans catalogue which is how I found the first date (Plan ordered 06/08/1996 pencilled in the margin).
The original design does not have a bulb keel but I have decided mine will but not with the narrow carbon fin as used on the latest boat designs. She is also not for competition so I plan to include a cabin top for a more ‘scale’ appearance.
Must give my thanks early on for the help I have had from David Creed who researched some old plans to find me a suitable design for the bulb keel but with a quite broad fin. As a result I have now made a plug for the bulb and a box in which to make the silicone mould.
I have also cut out all the rib moulds so I can start laying up the hull. it is a monocoque design so these are just to build the hull shape. There will then only be a couple of ribs around the keel mount and mast step to add strength in those areas.
Been buying materials but it is not easy as the plans have very little info on the sails and rigging.

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inaccurate plans

Not happy to find that 2 of the frames are not the correct shape.
I've added a scan of the frames. There should be an even change of spacing of the frame profiles. I think in shipbuilding terms they call it 'fair'. You can see there is not an even transition at frames 12 and 52.
Liked by Joe727 and doghouse

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Moulds for the keel bulb

Made the silicone moulds for the keel bulb. The moulds fit in a box as I doubt they would stay in place with 6.5Kg of molten lead in them. Will find out tomorrow.
Liked by Joe727

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Cast keel bulb

Well that went OK.
Now have to attach it to something.
Liked by doghouse
2 comments
  1. steve-d
    Warrant Officer
    No mounting points yet.
    I thought I was pushing my luck trying to DIY mould 6.5Kg of lead without making things worse with fixings.
    Plan is that the fin will be between 12 and 30mm thick with a 10mm plywood core which I will set into the lead. Then an 8mm diameter carbon rod right up into the hull finishing above the waterline and two M6 stainless steel studs to hold the keel on. One of those studs will pass right through the lead. There will not be space for the second stud to do the same.

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Second hull skin on

Just fitted the second skin on the hull
Liked by Joe727
1 comment
  1. Joe727
    Commander
    Hello, Just looked through your build blog, interesting way that you are doing the hull. Have you made any further progress on it? Very nice work on the lead bulb
    Cheers, Joe
    Liked by Donnieboy

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Hull off the build jig

I didn't know I was building a canoe for a small child but that's how it's come out.
Now needs strong points for the keel mount, a step for the mast and reinforcement for chain plates etc. I will then glass fibre the inside before making some deck beams.
Liked by Joe727 and RNinMunich
3 comments
  1. steve-d
    Warrant Officer
    It won't be my kids (37 & 40) but I do have grand kids that would fit.
    Thanks for the heads up on the deck beams...good call.
    Liked by Inkoust
  2. RNinMunichBronze
    Fleet Admiral
    Actually I meant your children as a 'crew production unit' 😉😲
    Good to hear you have potential already lined up 👍
    Tip about cross beams is from experience. Along time ago (far far away!) I reskinned a long thin destroyer hull, originally built all balsa with a 1/32" hull skin, with fibre glass and suddenly it was even thinner! Good for speed vs given power 😊 but not so good for refitting the decks and internals 😡 Also seemed to create a twisting stress in the hull!!
    Carry on the great work, All the best Doug 😎

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Deck beams & keel

Been glueing up the curved deck beams (one still in the jig) and laying them roughly in place but final position is going to be governed by mast position and hard points for the running and standing rigging most of which I have yet to establish.
Most of the keel is done but still needs plenty of sanding to get the foil profile right.

So next question is does anyone have knowledge on how to make my own sails. They will not be modern Mylar/scrim types as I am going for a semi vintage look. I've bought some white nylon cloth (about the grade you would make a holdall out of) now I need to learn how the get the right shape into the sail.
Liked by AlessandroSPQR and Donnieboy and
5 comments

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