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Blocks

Sailing Blocks

Sailing blocks provide smooth, reliable line control for sails, rigging, and deck operations. Engineered for strength and low friction, blocks make sail handling efficient, safe, and precise in all conditions.

High-Performance Sailing Blocks

  • Durable, corrosion-resistant construction for long-lasting use
  • Low-friction sheaves for smooth line handling and reduced wear
  • Ideal for mainsails, jibs, spinnakers, and custom rigging setups
  • Marine-grade materials designed for performance in saltwater and freshwater

Trusted Brands

Top sailing block brands include Barton Marine, Harken, Lewmar, Ronstan, Schaefer Marine, SeaSure, and Wichard Marine.

Related Sailing Categories

Accessories, Rigging, Rope, Winches

Why Buy Sailing Blocks from MarineWaze

  • Premium-grade blocks for smooth, efficient line handling
  • Trusted brands for durability, strength, and marine performance
  • Expert guidance for selecting the right blocks for your rigging
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  • Barton Marine Single Fixed Eye [N00110]
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    Barton Marine Single Fixed Eye [N00110]

    Barton Marine

    MSRP: $9.30
    $8.37
    Single Fixed EyePlain Bearing BlocksBarton plain bearing blocks have a precision molded acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads.SpecificationsSheave size: 20mm x 8mmMax rope diameter:...
    MSRP: $9.30
    $8.37
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  • Barton Marine Size 2 Single Cheek Block [N02160]
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    Barton Marine Size 2 Single Cheek Block [N02160]

    Barton Marine

    MSRP: $24.35
    $21.92
    Size 2 Single Cheek BlockPlain Bearing BlocksBarton plain bearing blocks have a precision molded acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads.SpecificationsSheave size: 35mm x 12mmMax rope...
    MSRP: $24.35
    $21.92
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  • Barton Marine Size 1 Single Swivel Block w\/Becket [N01130]
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    Barton Marine Size 1 Single Swivel Block w/Becket [N01130]

    Barton Marine

    MSRP: $22.77
    $20.49
    Size 1 Single Swivel Block with BecketWith the unique super-low friction ball race systems, featuring acetal sheaves and delrin ball bearings, running on a large diameter center boss. This allows us to fit more load-bearing balls, which ensure extremely...
    MSRP: $22.77
    $20.49
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  • Ronstan Series 50 Ball Bearing Block - Single Loop Top [RF50101]
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    Ronstan Series 50 Ball Bearing Block - Single Loop Top [RF50101]

    Ronstan

    MSRP: $58.09
    $49.38
    Series 50 Ball Bearing Block - Single Loop TopSheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.Features:Low...
    MSRP: $58.09
    $49.38
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  • Ronstan Series 40 All Purpose Block - Fiddle - Becket - Cleat [RF41530]
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    Ronstan Series 40 All Purpose Block - Fiddle - Becket - Cleat [RF41530]

    Ronstan

    MSRP: $136.03
    $115.63
    Series 40 All Purpose Block - Fiddle - Becket - CleatFeatures:Exceptionally high working loadsLow maintenance, long service lifeSelf-lubricating sheaveCaptive Lock™ universal headSlotted pin shackle eliminates fouled linesSnap fit removable becket...
    MSRP: $136.03
    $115.63
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  • Barton Marine Size 2 Double Stanchion Lead Block [N02290]
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    Barton Marine Size 2 Double Stanchion Lead Block [N02290]

    Barton Marine

    MSRP: $47.80
    $43.02
    Size 2 Double Stanchion Lead BlockBarton Marine's stanchion lead blocks have proven to be popular with Cruising sailors all over the World. Mounted onto the stanchion base, the stanchion lead block enables the Genoa furling line to be led back to the...
    MSRP: $47.80
    $43.02
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  • Harken 40mm Twing Block [2699]
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    Harken 40mm Twing Block [2699]

    Harken

    $77.35
    40mm Twing BlockLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming.Features:Opening...
    $77.35
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  • Harken 29mm Carbo T2 Block [2146]
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    Harken 29mm Carbo T2 Block [2146]

    Harken

    MSRP: $33.30
    $29.95
    29mm Carbo T2 BlockThe high-strength composite T2™ is the first block with no metal shackles or rivets. It is used for traveler controls, mainsheets and vangs, cascades, bridles, and other systems where small, lightweight blocks are called. The T2...
    MSRP: $33.30
    $29.95
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  • Ronstan Series 30 Ball Bearing Block - Single - Loop Top [RF30101]
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    Ronstan Series 30 Ball Bearing Block - Single - Loop Top [RF30101]

    Ronstan

    MSRP: $25.91
    $22.02
    Series 30 Ball Bearing Block - Single - Loop TopFeatures:Low friction 2-stage ball bearing system provides consistent performance over the full working load rangeHigh static and dynamic load capacityLight weightVersatile head fittingsSheaves running on...
    MSRP: $25.91
    $22.02
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  • SeaSure Telescopic Cruiser Extension [23.72]
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    SeaSure Telescopic Cruiser Extension [23.72]

    SeaSure

    MSRP: $195.65
    $92.99
    Telescopic Cruiser ExtensionThe tiller extension is simple to adjust; simply twist the handle 90 degrees, and it slides open or closed. Once you have it to the length that is required, twist it back 90 degrees to lock it.Features:This telescopic cruiser...
    MSRP: $195.65
    $92.99
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  • SeaSure Hatch Lock [23.35]
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    SeaSure Hatch Lock [23.35]

    SeaSure

    MSRP: $294.75
    $134.99
    Hatch LockUsed to secure the sliding hatch to the washboards, this hatch lock can be operated from the cabin or the cockpit. Provision for a padlock.Features:Suitable for washboards up to 19mm thickThe Only RORC-certified hatch...
    MSRP: $294.75
    $134.99
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