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Thread: Small boat pron.

  1. #3151
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    Default Re: Small boat pron.

    Quote Originally Posted by Rum_Pirate View Post
    Why do the bowsprits have a significant downward bend in them?

    Looks like the bobstay is way too tight.
    Standard practice in all, or most, such craft. The New York Sandbaggers did it that way, the French Clippers d'Argentuil did it, the Historical 18 Foot Skiffs do it. If I recall correctly, the idea is that the forestay cannot really move the bowsprit tip upwards, because that would require straightening the bowsprit and of course that can't happen when the forestay is loading the pre-bent bowsprit in compression. The only way the pre-bent bowsprit can move up is by effectively getting longer as it straightens out, but it can't get longer because the forestay slopes aft and restricts it. In contrast, if a straight bowsprit takes on an upward curve, then the forestay's upward pull and the compression forces both bend it further upward until it snaps. Similar to the reasoning behind curved cat crossbeams.

    Modern Skiffs used to hang their asymmetrics off a down-curved bow pole (which is where I got the explanation, I think) but I seem to recall that left them vulnerable when they nosedived and the spinnaker generated a downward force, so now they have more stays and more carbon and keep them in column.

    Apologies if I'm telling anyone to suck eggs. I assume it doesn't matter as much in bigger boats where forestays are slacker?
    Last edited by Chris249; 05-15-2018 at 01:57 AM.

  2. #3152
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    Default Re: Small boat pron.

    The Clipper d'Argentuil, or French Sandbagger types, had adjustable bobstays which normally curved the bowsprit down. Argentuil was a centre of the Impressionist movement and the top sailor was the wealthy Gustav Caillebotte, a fine painter in his own right and a yacht designer and patron of the Impressionists. Check out the typical downward curved bowsprit on this piece of his. Caillebotte, by the way, is the dude in the singlet on the lower right hand side of Renoir's famous Luncheon of the Boating Party/

    gustave_caillebotte_la_seine_a_argenteuil_d5369360g (1).jpg
    Last edited by Chris249; 05-14-2018 at 10:04 PM.

  3. #3153
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    Default Re: Small boat pron.

    So.....it looks like one day Renoir and Monet were sitting around, painting the same Clipper. This is Renoir's version;

    Renior.jpg

    Attachment 16032

    and this painting by Monet must have been done at the same time, surely - same boat, same clothes on the two dudes, same conditions;

    monet_sailing_at_argenteuil.jpg

    Attachment 16033

    So what's the relevance for the bowsprit curve issue? Well, a recent critic unfavourably compared the Renoir work to the Monet, saying that the upward-angled bowsprit in the Monet painting "appears more forceful, active and engaged". Knowing that the bobstay was adjustable, probably all that happened was that the skipper said "hey, Francois, now you're on board ease off the bobstay and reduce le rig tension" before Renoir got to that bit. So probably they gave a faithful rendition of the boat, but because of the adjustable bobstay poor old Auguste is copping flak from the critics 140 years later. An artist's life is a harsh one.....

    (EDIT - Thanks Pete, hopefully they show now)
    Last edited by Chris249; 05-15-2018 at 01:55 AM.

  4. #3154
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    Default Re: Small boat pron.

    No images Chris .
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  7. #3157
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  9. #3159
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    Default Re: Small boat pron.

    Roger's Jessie...



    A Gartside Tomales Bay One Design/ Jessie...pretty identical to my Lymington Pram.
    Last edited by Edward Pearson; 05-15-2018 at 05:38 AM.

  10. #3160
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    Default Re: Small boat pron.

    A pretty wee boat.






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  24. #3174
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    I like this! I'm not sure why I like it more than the others, but I like it a lot!

    Quote Originally Posted by PeterSibley View Post


  25. #3175
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  31. #3181
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    I like this so much, I'd take it even without the young woman.

    Quote Originally Posted by PeterSibley View Post





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  35. #3185
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    Hey, I finally made the small boat thread!

    Quote Originally Posted by PeterSibley View Post
    That's the Phoenix III my brother built, on THIS TRIP I took to Lake Nipigon a few years back.

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