Help to raise my boat from the bottom of a lake

Discussion in 'All Things Boats & Boating' started by sean-nós, Nov 7, 2015.

  1. hoytedow
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    hoytedow Carbon Based Life Form

    You could also take a CO2 fire extinguisher down to inflate the bags if that would make it easier.
     
  2. Poida
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    Poida Senior Member

    Not more CO2 in the atmosphere Hoyt. What are you thinking!!:p

    Poida
     
  3. hoytedow
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    hoytedow Carbon Based Life Form

    Or you could open some packages of baking powder underwater. :p You can move a passenger plane by yourself if you have the patience to go slow. You could fill the bags a flask at a time just free diving or with a weight and no scuba. It would not rise at a dangerous speed then.
     

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    Last edited: Nov 10, 2015
  4. Poida
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    Poida Senior Member

    Now you're being silly!:(

    Poida
     
  5. sean-nós
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    sean-nós Senior Member

    Ok just throwing this out there ;) would this work put the winch on the deck reinforce underneath with 3/4" ply to bolt the winch into then run the synthetic rope down the bow roller and lift her up to about 5 foot below the boat and reverse to shore, I have a 115 hp merc on the back so it should balance out a bit.


    [​IMG]
     
  6. Mr Efficiency
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    Mr Efficiency Senior Member

    I think it is too heavy to be using that runabout, What weight do you imagine would be involved, hanging off the bow ?
     
  7. sean-nós
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    sean-nós Senior Member

    About 500kg the weight of a 5lt V8 and a 1-1 borg warner gearbox the rest of the boat should float.


    .
     
  8. Mr Efficiency
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    I was thinking something similar, it is too much for the runabout even if the hardware did not bust. It might sink another boat !
     
  9. hoytedow
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    Remember that when submerged the metal only weighs as much as its weight in air minus the weight of the water it displaces.
     
  10. Mr Efficiency
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    Yes, but seeing iron is about 7 times water weight/volume, you still have a heavy object. No way I'd want 500 kg hanging off the nose of that runabout.
     
  11. hoytedow
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    hoytedow Carbon Based Life Form

    Neither would I. See the illustration on my previous post.
     
  12. sean-nós
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    sean-nós Senior Member

    Very nice illustration it is too what program did you use for that it's a little bit better than my effort :D
     
  13. hoytedow
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    I drew it in Paint. What is the lake?
     
  14. sean-nós
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    sean-nós Senior Member

    It's Lough Ree in Ireland, this has been the search area so far with 10 boats found in all :mad:


    [​IMG]
     

  15. hoytedow
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    hoytedow Carbon Based Life Form

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