Blocks
Sailing blocks are essential components for optimizing sailboat performance, providing smooth and efficient control over the sails. These marine blocks are available in various sizes and types, including single, double, and triple blocks, designed to handle different line loads and configurations. Constructed from durable materials like stainless steel, nylon, and carbon fiber, sailing blocks are built to withstand harsh marine environments, ensuring long-lasting reliability. Key features to consider include block sheaves, load ratings, and ball bearings for minimal friction and maximum efficiency. Whether you need traveler blocks, deck blocks, or sail handling blocks, the right selection ensures smoother sail trims and quicker adjustments. Leading brands like Harken, Lewmar, and Antal offer high-quality sailing blocks that are easy to install and maintain. Choosing the right block and tackle system for your sailboat enhances maneuverability, improves performance, and provides better control while sailing, making them a must-have for any sailing enthusiast or racer.
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Schaefer Twin Sheet Block f/1-1/4" T-Track - Black
Schaefer Marine
MSRP: $460.95$354.59Twin 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: $460.95$354.59 -
Schaefer Series 7 Flat Base/Aluminum Cheek/Delrin Sheave
Schaefer Marine
MSRP: $142.25$109.43Series 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...MSRP: $142.25$109.43 -
Schaefer Single Aluminum Block - 60mm Sheave
Schaefer Marine
MSRP: $125.60$96.61Single 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: $125.60$96.61 -
Schaefer Stand-Up Swivel - Aluminum Block
Schaefer Marine
MSRP: $248.75$191.35Stand-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: $248.75$191.35 -
Schaefer Single Ball Bearing Block
Schaefer Marine
MSRP: $115.25$88.66Single 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"...MSRP: $115.25$88.66 -
Schaefer Series 5 Flat Base Cheek Block - Stainless Steel Cheeks
Schaefer Marine
MSRP: $111.70$85.92Series 5 Flat Base Cheek Block - Stainless Steel CheeksSeries 5 Cheek Block with Stainless Steel cheek. Delrin™ sheave ensures smooth operation and high safe working load. Stainless steel base distributes loads to a large surface area...MSRP: $111.70$85.92 -
Schaefer Single Stainless Steel Block - 60mm Sheave
Schaefer Marine
MSRP: $163.75$125.96Single Stainless Steel Block - 60mm SheaveDelrin™ sheave ensures low-friction and high safe working load. Swivel head may be locked in place to eliminate line twist. Specifications:Sheave Dia. 2 3/8" (60mm)Thickness 1 3/32" (28mm)Width 2 1/2"...MSRP: $163.75$125.96 -
Harken Midrange Single Block
Harken
MSRP: $159.75$140.95Midrange Single BlockMidrange blocks’ robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast trim and release under any load...MSRP: $159.75$140.95 -
Harken 22mm Double Micro Block
Harken
MSRP: $41.70$36.9522mm Double Micro BlockLow-friction Micro blocks are compact and lightweight. Specifications:Sheave: 22mm / 7/8in.Length: 51mm / 2in.Weight: 43g / 1.5oz.Maximum line: 6mm / 1/4in.Maximum working load: 159kg / 350lbBreaking load: 544kg/ 1200 lb ...MSRP: $41.70$36.95 -
Harken 22mm Micro Block w/Becket
Harken
MSRP: $19.15$16.9522mm Micro Block with BecketLow-friction Micro blocks are compact and lightweight. Specifications:Sheave: 22mm / 7/8in.Length: 51mm / 2in.Weight: 21g / .75oz.Maximum line: 6mm / 1/4in.Maximum working load: 91kg / 200lbBreaking load: 544kg/ 1200 lb ...MSRP: $19.15$16.95 -
Harken 29mm Double Carbo Air Block
Harken
MSRP: $50.70$44.9529mm Double Carbo Air BlockLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming...MSRP: $50.70$44.95 -
Harken 16mm Forkhead Block
Harken
MSRP: $28.15$24.9516mm Forkhead BlockThe 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race and has a 250 lb (113 kg)...MSRP: $28.15$24.95