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Ronstan SK99 Dyneema Soft Shackle with Dog Bone, Suits RF47109
Regular price $157.00Unit price /Unavailable -
Ronstan Soft Attachment Snatch Block, 42mm
Regular price $449.00Unit price /Unavailable -
Ronstan Soft Attachment Snatch Block, 42mm No Soft Shackle
Regular price $315.00Unit price /Unavailable -
Ronstan Soft Attachment Snatch Block, 60mm
Regular price $791.00Unit price /Unavailable -
Ronstan Soft Attachment Snatch Block, 60mm No Soft Shackle
Regular price $631.00Unit price /Unavailable -
SK99 Dyneema® Soft Shackle with Dog Bone, Suits RF67109
Regular price $206.00Unit price /Unavailable -
Ronstan SK99 Dyneema® Soft Shackle with Dog Bone, Suits RF77109
Regular price $262.00Unit price /Unavailable -
Ronstan Soft Attachment Snatch Block, 75mm
Regular price $1,275.00Unit price /Unavailable -
Ronstan Soft Attachment Snatch Block, 75mm No Soft Shackle
Regular price $947.00Unit price /Unavailable
Soft Attachment Snatch Block Pulley Solutions for High-Load Rigging
When managing high-tensile sheet lines or adjusting temporary deflection points on deck, having the right rigging hardware ensures efficiency and mechanical safety. A soft attachment snatch block combines lightweight portability with massive load-handling capabilities, making it an indispensable tool for modern sailing vessels. Featuring advanced synthetic materials like SK99 Dyneema soft shackles and precision composite journal bearings, modern block designs deliver maximum strength without the excessive weight or deck-damaging hazards of traditional metal hardware.
At Fawcett Boat Supplies, our featured range of lightweight marine blocks provides exceptional dynamic load capabilities tailored for performance racers and offshore cruisers alike.
Understanding Mechanical Advantage: What is a Snatch Block?
Before upgrading your vessel's running rigging, it helps to understand what is a snatch block and how it functions differently from standard captive hardware.
A traditional pulley block remains fixed in place with a threaded or pinned metal axle, requiring lines to be fed through from end to end. In contrast, a snatch block pulley features a side-opening design or removable soft shackle attachment that allows crew members to quickly insert a loop of line directly onto the sheave without unreeving the entire line.
Understanding how do snatch blocks work relies on basic mechanical physics. When integrated into a boat's winch and pulley system, a snatch block alters the direction of a line pull, helping redirect sheets to available deck winches, establish temporary barberhaulers, or double line pull efficiency to reduce strain on equipment.
Engineering Behind Modern Soft Attachment Winch Snatch Block Hardware
Traditional steel hardware can mark up gelcoat, dent aluminum toe rails, and add unnecessary weight aloft. Upgrading to a soft attachment winch snatch block eliminates heavy metal shackles in favor of high-tenacity synthetic fiber loops.
Key Components of High-Performance Snatch Blocks
- Dyneema SK99 Soft Shackles: High-modulus polyethylene cords paired with marine-grade aluminum dog bones create flexible, ultra-strong anchor points capable of enduring extreme working loads.
- Machined Anodized Cheek Plates: Precision CNC-machined aluminum housing offers high structural rigidity while protecting the internal sheave mechanism from lateral friction.
- Duplex Stainless Steel Hubs & Bearings: Incorporating composite journal bearings and thrust washers ensures smooth sheave rotation even under intense dynamic loads.
Whether you need a compact 42mm sheave for control lines or a heavy-duty 75mm snatch block pulley for primary jib sheets, soft-attachment hardware provides silent, damage-free performance anywhere on deck.
Deck Operations: How to Use a Snatch Block Safely
Knowing how to use a snatch block correctly prevents premature line wear and prevents unsafe shock-loading across deck fairleads.
- Select an Appropriate Anchor Point: Fasten the soft shackle or dog-bone loop around a padeye, toe rail, or structural mast base fitting rated for the expected load.
- Open the Side Housing: Detach the soft loop to open the cheek plate assembly.
- Insert the Working Line: Slip the bight of your working sheet over the internal sheave without disconnecting either end of the line.
- Secure the Attachment: Re-engage the Dyneema loop or dog-bone retainer tightly around the cheek plates before applying tension.
Mastering proper technique when using a snatch block allows crew members to clear overriding turns on winches, set up emergency steering lines, or optimize sheet lead angles on the fly. Knowing exactly how does a snatch block work under heavy load ensures safe operation during high-wind maneuvers.
Premium Ronstan Marine Hardware Solutions
Optimizing your deck layout requires high-load blocks engineered to withstand continuous saltwater exposure and dynamic friction. Industry-leading Ronstan hardware delivers world-class reliability, combining precision CNC machining with Dyneema synthetic fiber technology to streamline line handling. At Fawcett Boat Supplies, our featured collection of Ronstan soft attachment snatch blocks gives mariners maximum strength and versatility for every temporary rigging need. Explore our full range of Ronstan blocks to upgrade your vessel's running rigging system today.
Frequently Asked Questions
What is a snatch block and how does it differ from a standard pulley block?
What is a snatch block and how does it differ from a standard pulley block?
A standard pulley block requires you to thread a rope all the way through from one end, whereas a snatch block allows the side plate or soft attachment to open so a working line can be inserted into the sheave at any point along its length.
How does a snatch block work within a marine winch and pulley system?
How does a snatch block work within a marine winch and pulley system?
A snatch block pulley changes the angle of a line pull to route sheets efficiently toward a deck winch. When rigged as a moving block, it can also create a 2:1 mechanical advantage, cutting the force needed to hoist or haul heavy loads in half.
What are the advantages of a soft attachment winch snatch block over metal shackles?
What are the advantages of a soft attachment winch snatch block over metal shackles?
Soft attachment blocks utilize ultra-strong Dyneema SK99 shackles instead of stainless steel pins. This drastically reduces overall weight, eliminates metallic corrosion, prevents impact damage to your deck and gelcoat, and allows self-aligning rotation under load.
How do snatch blocks work to clear overriding winch turns in emergencies?
How do snatch blocks work to clear overriding winch turns in emergencies?
When a line gets jammed or overridden on a primary winch, you can rig a secondary snatch block onto an adjacent padeye, capture the loaded line ahead of the winch using a rolling hitch, and tension the line on another winch to instantly relieve load from the jammed drum.
What safety precautions should be taken when using a snatch block on deck?
What safety precautions should be taken when using a snatch block on deck?
Always verify that the working load limit (WLL) of your snatch block and its soft attachment match or exceed the breaking strain of the line being tensioned. Ensure the soft shackle dog bone is fully seated and locked before tensioning through your winch and pulley system.