Harken 57mm Ratchamatic® Block Swivel
Next-day UK delivery available
Order before 3pm — from £3.95
Same-day collection
Available from our North Shields store
Free returns within 30 days
Unused & original packaging

Harken

Harken 57mm Ratchamatic® Block Swivel

Professional-grade marine product — trusted by boaters across the UK.

SKU: 2625 Only 2 left
£132.30

Tax included. View shipping policy

Next-day UK delivery available — order before 3pm
Same-day collection from our North Shields store
Expert advice — call 0191 414 0065

Klarna & PayPal available at checkout

Harken 57mm Ratchamatic® Block Swivel features lightweight construction, an innovative ratchet mechanism, and smooth rotation, making it ideal for efficiently controlling sails and reducing line loads in marine applications. Description The Harken 57mm Ratchamatic® Block Swive...

Harken 57mm Ratchamatic® Block Swivel features lightweight construction, an innovative ratchet mechanism, and smooth rotation, making it ideal for efficiently controlling sails and reducing line loads in marine applications.

Description

The Harken 57mm Ratchamatic® Block Swivel is a robust and reliable solution designed for optimal performance in a variety of marine applications. Engineered with precision, this block features an innovative ratcheting mechanism that allows for controlled easing of loads, significantly enhancing user efficiency during sail handling. Constructed from high-quality materials, the Ratchamatic® Block boasts a lightweight yet durable design, perfect for both competitive racing and recreational sailing. The swivel head provides exceptional versatility, permitting seamless integration into different rigging setups. With a working load limit of 670 kg and a breaking load of 2,200 kg, this block is built to withstand the demanding conditions often encountered at sea. Key features include an integral shackle for easy attachment and secure connections, as well as a sealed ball bearing system for smooth operation and reduced friction. The block's racheting feature allows for precise control, making it ideal for applications such as controlling halyards, sheets, and other rigging. Practical benefits for marine users include improved sail trim efficiency and reduced wear on lines, contributing to lower maintenance costs over time. Whether you are a seasoned sailor or a weekend enthusiast, the Harken 57mm Ratchamatic® Block Swivel provides an effective solution for enhancing your sailing experience. Reliable and versatile, this block represents an essential addition to any marine setup.

Specification
Product Name Harken 57mm Ratchamatic® Block Swivel
Sheave Diameter 57 mm
Length 156 mm
Width 85 mm
Height 72 mm
Weight 200 g
Maximum Working Load 500 kg
Breaking Load 1500 kg
Material High-strength composite and aluminum
Ball Bearings Stainless steel
Swivel Type Integrated swivel
Certifications CE certified
Application Single line systems, sail handling
Next-day UK delivery
Available on most items — order before 3pm. From £3.95.
Same-day collection — North Shields
Order online or call ahead — collect from our North Shields store today.
Free delivery over £100
Free standard delivery on all qualifying orders to UK mainland addresses.
Returns — 30 days
Unused, original packaging. Full returns policy →
Not sure which product you need? Call our team on 0191 414 0065
Looking for alternatives? Browse our full range

Why buy from Marine Chandlery?

  • UK marine specialists, based in North Shields
  • Next-day UK delivery available
  • Same-day collection from our store
  • Expert advice before and after purchase
  • Carefully selected marine-grade products
  • Secure checkout & trusted payment options
Need help choosing?
Our marine experts are here to help
0191 414 0065 Or message us on WhatsApp
Next-daydelivery
Same-daycollection
Securecheckout
Easyreturns