bahamian mooring with equal pull on both anchors always

Discussion in 'All Things Boats & Boating' started by jon haig, Oct 12, 2019.

  1. jon haig
    Joined: Jun 2019
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    Location: pompano beach,fl

    jon haig Junior Member

    i thought this would be good idea.ANY comments or clarifications please add.......
    Custom bahamian mooring system. keep EQUAL pull on both anchors at almost all angles . put a steel 5" diameter hoop on anchor #1 which has only 20 metrs of chain. now put the chain of anchor #2 thru the hoop. How to do the mooring. First keep anchor # 1 on deck as you release anchor #2 (the chain of anchor #2 will be passing thru the hoop of #1 as you do this . Now set anchor #2 25 metrs from where you want the boat centered. Second back up over the spot you want the boat centered and continue another 23 meters.Drop and set anchor #1 as you back up toward anchor #2.When you have released all of 20 metrs of anchor #1 chain and hoop into the water pull on anchor #2 chain to center the boat .You are now pulling on anchor #2 chain as it is passing thru the hoop and equally pulling on anchor #1.When boat is in vicinity over anchor #1 ,then you can see it will be pulling only on anchor #2. So make that your big anchor and place them accordingly.
     

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    Last edited: Oct 18, 2019
  2. waikikin
    Joined: Jan 2006
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    waikikin Senior Member

    Surely that might in some conditions such as wind blowing/loading the vessel from direction of number 1 anchor potentially put a 2:1 load less friction on number 1 anchor and when wind is blowing from Number 2 anchor just load it at the usual rate...
    Jeff.
     
  3. gonzo
    Joined: Aug 2002
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    gonzo Senior Member

    I'm not sure I understand the geometry. Can you post a diagram? When a boat turns with the wind the distance to the anchors will change. Also, as a chain drags over the leeward anchor, it will foul itself. Also, if the hoop is free to slide on the anchor #2 chain, the tension will not be equal at all angles.
     
  4. ImaginaryNumber
    Joined: May 2009
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    ImaginaryNumber Imaginary Member

    I don't think your setup will have the effect you expect or desire.

    Assume that the ring acts as a frictionless pulley.
    Assume that the boat is well to the "left" of anchor #2, and pulling on anchor #1 with a force of "F".
    The "pulley" created by the ring will have the effect of exerting a force of "F" on anchor #2, and a force of 2 x "F" on anchor #1.
    You would be better off having a fixed connection at the ring, thus reducing the force on anchor #1 back to just "F", and a force of zero on anchor #2 (in the above scenario).
     

  5. waikikin
    Joined: Jan 2006
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    Location: Australia

    waikikin Senior Member

    Yes
    & when side loaded better off having some slack in the lower parts to form a bridle with a smaller included angle. Personally I feel this is a bad idea on three fronts.
    Jeff
     
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