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2:1 Purchase

2:1 Blocks are almost exclusively designed to attach to furler top swivels for 2:1 halyard system. 2:1 Shackles can be used for 2:1 halyards on smaller code zero and asymmetric furlers but are mainly used for a 2:1 purchase under the furling drum. Size the 2:1 block/shackle to be equivalent to the SWL of the furler. OR if it is a pin connection - to match the pin diameter on the furler / swivel. Read more...


  • 3:1 Purchase
  • 2:1 Purchase
kr 2,693.08 2693.08 DKK
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kr 11,237.28 kr 11,828.71 11237.28 DKK
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kr 2,520.04 2520.04 DKK
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kr 6,360.54 kr 6,695.31 6360.54 DKK
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kr 6,761.31 6761.31 DKK
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Note: be careful to double check shackle jaw width related to drum/swivel spindle. For a halyard, it is deadended on the mast and then runs around the bearing surface of the 2:1 shackle/block and then into the halyard sheave and down to deck level. For a 2:1 Tackline, the line is deadended at deck level and then up around the Frictions sheave and then down to a block on the deck and back to a jammer cleat / winch for tensioning.

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