Blocks

About Blocks

Marine Blocks: Buyer’s Guide

Introduction

For avid sailors and boating enthusiasts, selecting the right marine blocks is crucial for a seamless and safe sailing experience. Marine blocks play an essential role in the efficient and effective operation of a boat's rigging system. This guide is designed to help you understand the nuances of marine blocks and make an informed decision when purchasing them.

Section 1: What Are Marine Blocks?

Marine blocks are pulleys used in the rigging of boats and ships. They facilitate the changing of direction and point of application of a force applied to a rope. In simpler terms, they are used to lift heavy loads, adjust sails, and aid in maneuvering the boat.

Types of Marine Blocks

Single Blocks: Used for basic applications, these have one wheel and one sheave.
Double Blocks: With two sheaves, they offer more mechanical advantage.
Swivel Blocks: These can rotate to prevent rope twisting.
Fiddle Blocks: Combine different sizes of sheaves in one block for versatile applications.

Section 2: Factors to Consider When Buying Marine Blocks

Material and Durability

Marine blocks are typically made from stainless steel or composite materials. The choice depends on the sailing conditions and the required strength-to-weight ratio.

Load Capacity and Size

Consider the maximum load the block will handle and ensure it matches your requirements. The size of the block should correspond with the thickness and strength of the ropes used.

Ease of Use and Maintenance

Look for blocks that are easy to install and maintain. Blocks with ball bearings offer smoother operation but may require more maintenance than plain bearing blocks.

Compatibility

Ensure the blocks are compatible with your boat’s rigging system and the type of sailing you do.

Section 3: Top Brands and Their Offerings

Harken Blocks

Known for high-quality, durable marine blocks. They offer a wide range of blocks for various sailing needs.

Lewmar Blocks

Offers a variety of blocks that balance performance and price, suitable for both casual and competitive sailors.

Ronstan Blocks

Famous for innovative designs, Ronstan’s blocks are popular among those looking for high-performance gear.

Section 4: Maintenance and Care for Marine Blocks

Regular maintenance includes cleaning, inspecting for wear and tear, and lubrication. Always follow the manufacturer’s guidelines for care and maintenance to ensure longevity and optimal performance.

Conclusion

Choosing the right marine block involves understanding your sailing needs, the types of blocks available, and the best brands in the market. With this guide, you are now equipped to make an informed decision that enhances your boating experience.

FAQs

Q: Can I use any block for any type of sailing?
A: No, it's important to choose a block based on the specific needs of your sailing activity.

Q: How often should I replace my marine blocks?
A: It depends on the usage and maintenance. Regular inspection will help you determine when a replacement is needed.

Blocks

Harken Carbo Air Block Double Swivel Block - 75 mm (2 15/16") - 2662

Lewmar Synchro Block - 50 mm (2")

Antal Dyneema Loop

Ronstan Snatch Block with Trunnion Head - 80 mm (3 1/8") - RF6751

Ronstan Series 40 Fiddle Block - RF40530

Ronstan Shock Block

Schaefer 3 Series Stand-Up Swivel Block - 303-62

Schaefer 5 Series Cheek Block - 505-28

Schaefer 7 Series Double Block - 706-25

Harken Double Stanchion Mount Lead Block - 40 mm (1 9/16") - 7405

Barton Size 3 Stanchion Lead Single Block

Harken Carbo Air Block Double Swivel Block - 29 mm (1 1/8") - 342

Harken In-Line Exit Bullet Block - 29 mm (1 1/8") - 089

Harken Big Bullet Block - 38 mm (1 1/2") - 168

Harken Big Bullet In-Line Exit Block - 38 mm (1 1/2") - 134

Harken Carbo Air Block Double Block - 40 mm (1 9/16") - 2642

Harken Carbo Lead Block - 40 mm (1 9/16") - 2156

Harken Aluminum Element Double Block Swivel - 45 mm (1 3/4") - 6239

Harken Aluminum Element Fiddle Block Swivel - 45 mm (1 3/4") - 6235

Harken Carbo AirBlock - 57 mm (2 1/4") - 2603

Harken Aluminum Element Block - 60 mm (2 3/8") - 6265

Harken Midrange Fiddle Block - 76 mm (3") - 1560

Lewmar Size 1 Snatch Block - 19810600

Ronstan Series 20 Block - 20 mm (3/4") - RF20100

Ronstan Series 40 Block - RF41520

Schaefer Delrin Sheave - 1 7/16" - 62-030-02

Schaefer 3 Series Block - 303-03

Schaefer 3 Series Cheek Block - 300-30

Schaefer 5 Series Fiddle Block - 504-45

Schaefer 5 Series Fiddle Block - 505-45

Schaefer 7 Series Cheek Block - 704-11

Barton Size 7 Ball Bearing Triple Block

Harken Micro Double Block - 22 mm (7/8") - 226

Harken Micro Triple Block - 22 mm (7/8") - 230

Harken Bullet Block Double - 29 mm (1 1/8") - 084

Harken Bullet Block Double - 29 mm (1 1/8") - 085

Harken Carbo Air Block Triple Block - 29 mm (1 1/8") - 347

Harken Thru-Deck Bullet Block - 29 mm (1 1/8") - 287

Harken Carbo Air Block Fiddle Block - 40 mm (1 9/16") - 2656

Harken T2 Soft-Attach Ratchamatic Block - 40 mm (1 9/16") - 2159

Harken Swivel Block - 57 mm (2 1/4") - 001

Harken Aluminum Element Block - 60 mm (2 3/8") - 6269

Harken Carbo Air Block - 75 mm (2 15/16") - 2666

Lewmar Synchro Double Block - 72 mm (2 13/16")

Ronstan Series 30 Orbit Triple Block - 30 mm (1 3/16") - RF35302

Ronstan Series 40 Stand-Up Block - 40 mm (1 9/16") - RF41140

Ronstan Series 60 Core Foot Block - 60 mm (2 3/8") - RF64151

Ronstan Dyneema Link 70 Series Single - RF9006-12