A duck(punt) with wings

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Steve Lewis,

who runs a great boat building blog here

http://www.angelfire.com/ego/lewisboatworks/

has made a variation on a duck punt

the yanks call them pirogues

it is the same length – a bit narrower, with a lovely transom

but most interestingly of all he has added chine runners

http://www.boatdesign.net/forums/wooden-boat-building-restoration/peerosail-build-42724.html

I asked Steve if I could share the images of his pirogue/punt and this is the email he sent

Sure… go ahead. I expect that the chine runners add maybe 4 or 5 degrees of windward ability and may not be worth the extra effort if someone is looking for a quick and dirty build. One thing about the boat is that I would prefer to use it in water where going over simply means standing up to breathe. The deeper lakes and rivers around here concern me a little with no built in flotation and the fact that you are deliberately leaning it to leeward. All it takes is a second of inattention and a gust to go over. I would prefer to do that where I can stand up, bail and hop back in rather than try to heave my bulk (it doesn’t heave very well at all) back in while floating neck deep in water.

Steve

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above….six hours into the build

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above – the sail arrives $109 – blimey we get ripped in the UK

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above…. the skill of a boat builder with a good eye – my transome is so ugly…. his is so lovely

 

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above… the wings

 

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above…. I thought of adding some chine runners to my punt…. but decided to keep it simple

 

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above… the boom

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above…. darn it… that looks good

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five of six more degrees into the wind – perhaps

 

worth it….. dunno…. I am tempted now

 

This is about Duck Punt films, Dylan Winter's Blog. Tags:

9 Responses to “A duck(punt) with wings”

  1. 12 June, 2013 at 10:17 amBill says:

    I really like the tombstone transom!
    Do you feel as though you gained much moment stability with your side wings?

  2. 12 June, 2013 at 3:05 pmSteven says:

    Not really… just a bit better pointing. The higher the wind and the more the heel the stronger the weather helm gets. Just ghosting along it actually has a bit of lee helm. I have had it right on the edge where it was sipping Mississippi and it was moving quite fast. I have almost finished making a small kick up rudder to be set up push/pull style. I’ll see if this will keep my paddles straight.

    • 12 June, 2013 at 4:00 pmdylan winter says:

      the experts at west mersea move their weight backards and forwards quite a bit

      they sail with one leg hanging over the side

      I assume that helps to trim the boat a bit

      • 14 July, 2013 at 9:55 pmresponderman says:

        It would be nice to have a sailing report from one of the west mersea lads and let us know some of their sailing techniques. On viewing their videos it appears as if they are slumped in the hull with a leg cocked over the side for comfort, it all looks so effortless to them.

  3. 24 June, 2013 at 10:28 amHarry says:

    Would it improve windward performance if it had vertical chine runners? Similar to above only vertical? I know it would increase draft a little but only by 3 or 4 inches max. What d’ya think?

    • 24 June, 2013 at 11:11 amdylan winter says:

      chine runners use some pretty weird physics – they make the edge of the boat work like a winged keep – they stop the water from flowing over the edge of the chine – so vertical runners might not be as effective as the horizontal ones. I have no idea how the physics works so don’t go thinking I know anything

  4. 14 July, 2013 at 9:49 pmresponderman says:

    My that is a sexy rear on that sir, I’m interested in the longer term results of those wings and if the benefits are worth the extra work. Dylan pointed out to me that boat builders are never happy to stick to a plan and not alter anything, but I guess that’s how Mk2 versions happen. But it is true, I am equally guilty of tweaking a perfectly good boat plan. Its a pretty boat and credit is due to you, a nice build Steve

  5. 18 July, 2013 at 9:43 pmWARREN says:

    Hmmm
    wings, can’t say I think they do much. If it was a round bilge hull it might have an little effect , (might).
    I would like to see side by side testing
    with, without and with a lee board.(known to work)
    Extra drag..quite a bit.
    How come I’ve never seen the same on any other boat?
    Yes works on a rudder as end plate but completely different effect.
    Now if you put them on the stern, added about 5 times the rig they could be planning boards but thats a different boat!!!
    But what do I know? 3 boat testing will tell….
    warren

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