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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
  • Product
  • Qty in Cart
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  • Price
  • Subtotal
  • Schaefer Stand-Up Swivel - Aluminum Block [704-62]

    Schaefer Stand-Up Swivel - Aluminum Block [704-62]

    Schaefer Marine

    MSRP: $281.90
    $205.99
    Stand-Up Swivel - Aluminum BlockSpecifications:Sheave Dia. 2-2/8" (60 mm)Max Line 1/2" (13 mm)Diameter includes urethane base 3-3/8" (86 mm)Height 4-25/32" (120 mm)H2 2-15/32" (63 mm)Fastener Size (4),1/4" RH (6 mm)C/C 1-11/16" (43 mm)SWL 2250 lbs (1020...
    MSRP: $281.90
    $205.99
    Qty in Cart: 0
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    MSRP: $281.90
    $205.99
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  • Schaefer Series 7 Flat Base\/Aluminum Cheek\/Delrin Sheave [704-11]

    Schaefer Series 7 Flat Base/Aluminum Cheek/Delrin Sheave [704-11]

    Schaefer Marine

    MSRP: $161.20
    $116.99
    Series 7 Flat Base/Aluminum Cheek/Delrin SheaveDelrin™ sheave ensures smooth operation and high safe working load. Stainless steel base distributes loads to a large surface area.Specifications:Sheave Dia. 2-3/8" (60 mm)Max. Line 1/2" (13 mm)Length...
    MSRP: $161.20
    $116.99
    Qty in Cart: 0
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    MSRP: $161.20
    $116.99
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  • Schaefer Single Aluminum Block [704-05]

    Schaefer Single Aluminum Block [704-05]

    Schaefer Marine

    MSRP: $142.35
    $105.99
    Single Aluminum Block - 60mm SheaveDelrin™ sheave ensures smooth operation and a high safe working load. Swivel head may be locked in place to eliminate twisting.Specifications:Sheave Diameter 2 3/8" (60mm)Thickness 1 3/32" (28mm)Width 2 1/2"...
    MSRP: $142.35
    $105.99
    Qty in Cart: 0
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    MSRP: $142.35
    $105.99
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  • Schaefer Clear Step Lead Block f\/1" Stanchions [506-44] Schaefer Clear Step Lead Block f\/1" Stanchions [506-44]

    Schaefer Clear Step Lead Block f/1" Stanchions [506-44]

    Schaefer Marine

    MSRP: $104.90
    $78.99
    Clear Step Lead Block for 1" StanchionsUnique design leads your furling control line outside of your stanchions for a clean lead aft to the cockpit. Stainless cheeks with Delrin(tm) ball bearing sheave ensure low-friction and high strength. Locks in...
    MSRP: $104.90
    $78.99
    Qty in Cart: 0
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    MSRP: $104.90
    $78.99
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  • Schaefer Single Ball Bearing Block [506-05]

    Schaefer Single Ball Bearing Block [506-05]

    Schaefer Marine

    MSRP: $130.65
    $97.99
    Single Ball Bearing BlockSingle block with aluminum cheeks and ball bearing sheave. Delrin™ ball bearing sheave ensures low-friction operation. Swivel head may be locked in place to avoid twist.Specifications:Sheave Diameter 2" (51mm)Thickness...
    MSRP: $130.65
    $97.99
    Qty in Cart: 0
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    MSRP: $130.65
    $97.99
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  • Schaefer Single Stainless Steel Block [505-05]

    Schaefer Single Stainless Steel Block [505-05]

    Schaefer Marine

    MSRP: $109.10
    $81.99
    Single Stainless Steel Block - 51mm SheaveSingle block with stainless steel cheeks. Delrin™ sheave ensures smooth operation and high safe working load.Specifications:Sheave Dia. 2" (51mm)Thickness 15/16" (24mm)Width 2 1/8" (54mm)Length 4 13/32"...
    MSRP: $109.10
    $81.99
    Qty in Cart: 0
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    MSRP: $109.10
    $81.99
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  • Schaefer Spring Loaded\/Lined Slide\/Aluminum f\/1" T-Track [504-82]

    Schaefer Spring Loaded/Lined Slide/Aluminum f/1" T-Track [504-82]

    Schaefer Marine

    MSRP: $271.45
    $192.99
    Spring Loaded/Lined Slide/Aluminum for 1" T-TrackDelrin™ sheave ensures smooth operation and high safe working load. Anodized aluminum cheeks and stainless steel slider ensure reliability. Polyethylene liner and pin stop allow for easy adjustment...
    MSRP: $271.45
    $192.99
    Qty in Cart: 0
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    MSRP: $271.45
    $192.99
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  • Schaefer Stand-Up Swivel w\/Aluminum Cheeks [504-62]

    Schaefer Stand-Up Swivel w/Aluminum Cheeks [504-62]

    Schaefer Marine

    MSRP: $234.20
    $167.99
    Stand-Up Swivel with Aluminum CheeksDelrin™ sheave ensures smooth operation and high safe working load.Specifications:Sheave Dia. 2" (51 mm)Max Line 7/16" (11 mm)Diameter includes urethane base 2-7/8" (73 mm)Height 4-1/32" (103 mm)H2 2-3/32" (54...
    MSRP: $234.20
    $167.99
    Qty in Cart: 0
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    MSRP: $234.20
    $167.99
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  • Schaefer Series 5 Flat Base\/Alum Cheek\/Delrin Sheave [504-11]

    Schaefer Series 5 Flat Base/Alum Cheek/Delrin Sheave [504-11]

    Schaefer Marine

    MSRP: $112.10
    $84.99
    Series 5 Flat Base/Alum Cheek/Delrin SheaveDelrin™ sheave ensures smooth operation and high safe working load. Stainless steel base distributes loads to a large surface area.Specifications:Sheave Diameter 2" (51 mm)Max. Line 7/16" (11 mm)Length...
    MSRP: $112.10
    $84.99
    Qty in Cart: 0
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    Price:
    MSRP: $112.10
    $84.99
    Subtotal:
  • Schaefer Single Aluminum Block [504-05] Schaefer Single Aluminum Block - 51mm Sheave [504-05]

    Schaefer Single Aluminum Block [504-05]

    Schaefer Marine

    MSRP: $93.90
    $71.99
    Single Aluminum Block - 51mm SheaveSingle block with anodized aluminum cheeks. Delrin™ sheave ensures smooth operation with high safe working load. Swivel head may be locked in place to avoid twist.Specifications:Sheave Dia. 2" (51mm)Thickness...
    MSRP: $93.90
    $71.99
    Qty in Cart: 0
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    MSRP: $93.90
    $71.99
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  • Schaefer Twin Sheet Block f\/1-1\/4" T-Track - Black [32-97]

    Schaefer Twin Sheet Block f/1-1/4" T-Track - Black [32-97]

    Schaefer Marine

    MSRP: $522.30
    $371.99
    Twin Sheet Block for 1-1/4" T-Track - BlackHardcoat anodized aluminum body and slider provide a high strength block. Aluminum sheave runs on nomex™/Teflon™ bearing for a low-friction, high strength sheave. Articulating sheave allows for a...
    MSRP: $522.30
    $371.99
    Qty in Cart: 0
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    Price:
    MSRP: $522.30
    $371.99
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  • Schaefer Series 3 Flat Base\/Alum Cheek\/Delrin Sheave [303-09]

    Schaefer Series 3 Flat Base/Alum Cheek/Delrin Sheave [303-09]

    Schaefer Marine

    MSRP: $91.05
    $69.99
    Series 3 Flat Base/Alum Cheek/Delrin SheaveDelrin™ plain bearing sheave ensures smooth operation and high safe working load. Stainless Steel base distributes loads to a larger surface area.Specifications:Sheave Dia. 1-7/16" (37 mm)Max Line 7/16"...
    MSRP: $91.05
    $69.99
    Qty in Cart: 0
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    MSRP: $91.05
    $69.99
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