First Post; Lurked Plenty: Adding Hull Buoyancy To A Vhull 14 Foot - Looking For Ideas/Suggestions

Discussion in 'Boat Design' started by robmcg25, Feb 25, 2019.

  1. robmcg25
    Joined: Feb 2019
    Posts: 20
    Likes: 1, Points: 3
    Location: Ohio

    robmcg25 Junior Member

    Thanks Ike, I checked that out and I will do that if needed and have it laminated at kinkos or something, I was hoping for a metal replacement but my boat is a 76 so yeah I doubt Myers would send me one. I allready have the stats I need between their site/my title/registration so thats covered anyways.

    Mr.Efficiency-
    Well two was the expected maximum originally. Then a third came and then a fourth, after a few years out in the wild. Here's the thing though, I love my little boat and I am totally happy with it, the fact my friends can't ride on it with me as the only camping boat, sucks and costs them more money to rent one. But at the end of the day that's not really my problem. I mostly just want to make sure 3+ gear are stable or 4+cargo boat is stable. Two with all the fixings you could want is 100% fine. 3 is where I get worried and 4 is where I make their gear or them ride in amazon rafts behind me.

    With this new motor weight though, 3 without a cargo vessel or some major mods is getting me worried.
     
  2. robmcg25
    Joined: Feb 2019
    Posts: 20
    Likes: 1, Points: 3
    Location: Ohio

    robmcg25 Junior Member

    Can someone confirm 1sq ft of displaced water provides 68lbs of boyancy. Not counting material weight.
     
  3. Blueknarr
    Joined: Aug 2017
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    Location: Colorado

    Blueknarr Senior Member

    One square foot displaces nothing.
    One cubic foot of freshwater weighs 68 pounds, and seawater is 63 pounds.
     
  4. robmcg25
    Joined: Feb 2019
    Posts: 20
    Likes: 1, Points: 3
    Location: Ohio

    robmcg25 Junior Member

    Yeah I meant a cubic foot. So boyancy is just equal to the weight of the water displaced?
     
  5. Mr Efficiency
    Joined: Oct 2010
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    Location: Australia

    Mr Efficiency Senior Member

    You got it. Fresh water is actually 62.5 lbs/ cubic foot.
     
  6. Blueknarr
    Joined: Aug 2017
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    Location: Colorado

    Blueknarr Senior Member


    My bad
    Mr E is correct seawater is heavier than fresh
     
  7. robmcg25
    Joined: Feb 2019
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    Location: Ohio

    robmcg25 Junior Member

    Great thanks guys.
     
  8. Squidly-Diddly
    Joined: Sep 2007
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    Location: SF bay

    Squidly-Diddly Senior Member

    rigid as in fiberglass or rigid as in with inflatable floor?

    I've got a Sevylor K79 2 man that must be 15yrs old and still holds air and no patches yet. Buddy has a Sevylor 6 man that has shot the Stanislaus River Knight's Ferry run too many times to count. Both these craft also double as excellent air-mattress and washing tubs/kiddy-pools on land. I don't see any Sevylor 6 man for sale and wouldn't trust any lessor brand, and some say they ain't what the used to be but others seem to get use out of them.
     
  9. Blueknarr
    Joined: Aug 2017
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    Location: Colorado

    Blueknarr Senior Member

    Squididly

    Into Knight's Ferry or the downstream float to Horseshoe?
     
  10. robmcg25
    Joined: Feb 2019
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    Location: Ohio

    robmcg25 Junior Member

    Fiberglass or plastic floors. Full inflatables are to easy to pop if you aren't careful.
     
  11. Ike
    Joined: Apr 2006
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    Location: Washington

    Ike Senior Member

    And if you use foam you have to subtract the weight of the foam. say 2 lb density (2 lb per cubic foot) 62.5 -2 =60.5 lb. So a cubic foot of 2 lb density foam only supports 60.5 lb
     

  12. Squidly-Diddly
    Joined: Sep 2007
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    Location: SF bay

    Squidly-Diddly Senior Member

    From Knight's Ferry. Its only Class II in couple spots for about first 300 yards and pretty slow after that.

    But people get killed on a regular basis.
     
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