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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
505.46 505.46000000000004 USD
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426.15 426.15000000000003 USD
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112.00 172.31 112.0 USD
35% Off
767.78 767.78 USD
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487.90 487.90000000000003 USD
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292.14 292.14 USD
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281.32 296.13 281.32 USD
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1,306.11 1,451.23 1306.1100000000001 USD
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210.83 221.93 210.83 USD
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197.20 197.20000000000002 USD
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1,758.89 1,954.32 1758.89 USD
10% Off
758.84 758.84 USD
0% Off

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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