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Harken 12:1 GP Catamaran Mainsheet System

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  • Harken 12:1 GP Catamaran Mainsheet System

    Harken’s Grand-Prix (GP) mainsheet system is critically important options for high-performance catamarans such as the Nacra 17 or for F18s.

    The high-efficiency blocks making up these systems feature insert-molded ceramic bearings that almost eliminate rolling resistance, greatly improving power transfer to the crew for easy, precise trimming. These compact blocks feature hard coat anodised side plates that envelop composite sheaves for easy disassembly/reassembly. The system profile is the lowest on the market by far. High-performance fairing increases aerodynamic flow and protects the crew and blocks from impact damage.

    The lower block features a built-in cam arm that infinitely adjusts by loosening two (2) screws with a hex key. A single ratchet sheave in the bottom block ensures release is controlled and smooth. A snap shackle attaches the block to the boom. A swivel shackle attaches to the traveler.

    Note: The GP mainsheet system comes as standard as a 12:1 mainsheet system, but can be easily reconfigured as a 10:1 or an 11:1 to align with wind or crew preference. All necessary parts and reeving instructions are included, the rope is not.

    Specifications

    • Sheave Ø (mm) - 59 mm
    • Pin-to-pin length (mm) - 224 mm
    • Weight (g) - 1039g
    • Maximum line Ø (mm) - 8mm
    • Maximum working load (kg) - 545kg
    • Breaking load (kg) - 1636 kg
  • Delivery and Costs

    We try to treat delivery as a pass through cost and keep the cost to you as low as possible, on top of our already competitive product prices.

    We offer free UK standard delivery for orders over £50, this does exclude boats, masts, booms and large items which can't be sent via standard mail.

    Any order placed by midday will leave us the same day unless there is a lead time which we detail on the product page. Items which require a courier may leave the next day.

    Delivery Costs

    UK 1st Class Small Packet - £3.99

    UK 1st Class Small Packet - Over 1KG - £5.99

    Courier - £8.99

    Courier - Long Items - £20

    Close to England - £10

    Europe - £12.50

    Europe - Over 1KG - £15

    Rest of the World - £60

  • Frequenty Asked Questions

    What is the quantity for ropes?

    The quantity is meters. If you order 5 items you will receive one 5 meter continuous length of that specific rope.

    How do I claim my first order discount?

    Simply sign up to our newsletter and we'll send your unique first order discount code.

    Do you ship to other locations?

    We are always happy to provide you with a quote for shipping, simply drop us an email to info@sailingchandlery.com with the items you are planning on ordering and your address.

    Who are Sailing Chandlery?

    We're a team of sailors who are passionate about keeping you sailing and providing an excellent service first time. Find out more.

    I have another question?

    You can call the team on 07793 953564 or email us info@sailingchandlery.com