Featured Brands
FEATURED SERIES
Harken Black Magic Blocks
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HARKEN'S NEW TWING BLOCK
Harken 3405 1 Ton Twing Block
The latest Twing block comes with a spring-loaded side opening mechanism that enables one-handed rigging even when wearing sailing gloves. The black anodized aluminum side plates are lined with sturdy bumpers that provide protection to both the block and the topsides and deck. The sheave is made of aluminum and rolls on a bearing system that is shared with Harken’s existing 2.3T high-load snatch block.
| Sheave Ø (mm) | 38.5 mm |
| Sheave Ø (in) | 1 1/2 in |
| Length (mm) | 78 mm |
| Length (in) | 3 in |
| Weight (g) | 143 g |
| Weight (oz) | 1.4 oz |
| Maximum line Ø (mm) | 11 mm |
| Maximum line Ø (in) | .43 in |
| Maximum working load (kg) | 1000 kg |
| Maximum working load (lb) | 2205 lb |
| Breaking load (kg) | 2000 kg |
| Breaking load (lb) | 4409 lb |
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With access to over 300 top-tier brands, we’re dedicated to meeting all your maritime needs. Our site caters to racers and high-caliber sailors, so If you’re looking for something specific that’s not listed on our site, we’re more than happy to assist with custom orders at no extra service fee.
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FEATURED CLASS
DN Iceboat
A DN Iceboat is a small, one-design racing sailboat specifically engineered for ice sailing. Characterized by its lightweight construction and sleek design, the DN is known for its impressive speed and agility on frozen surfaces. With its distinctive triangular sail and runners (skates) for gliding over ice, the DN offers an exhilarating sailing experience, drawing competitors from around the globe to ice sailing regattas. The DN iceboat is celebrated not only for its performance but also for its community and spirit of competition, making it a favorite among ice sailing enthusiasts worldwide.
Design History
The DN iceboat was developed in the early 1960s by a group of sailors in the United States, primarily as a response to the need for a standardized, competitive iceboat class. The first DN was designed by the American sailor and ice boating enthusiast, Harold "Bud" L. Schultheis. Its design quickly gained popularity due to its simple construction, excellent performance, and affordability compared to other iceboats. The DN class has since evolved, with many updates in materials and technology, but the original dimensions and concept have been preserved to maintain competitive integrity. Today, the DN class is recognized internationally, with strong participation in championships and events.
Specifications
- Length Overall (LOA): 14 ft (4.27 m)
- Beam: 5 ft (1.52 m)
- Draft: 6 in (0.15 m) (with skates)
- Sail Area: 75 sq ft (7.0 m²)
- Sail Type: Triangular, with a typical aspect ratio
- Weight: Approximately 90-100 lbs (40-45 kg)
- Hull Material: Typically made from wood or composite materials; modern designs often use fiberglass or carbon fiber for reduced weight and increased durability.
- Runners (Skates): Made of high-carbon steel, often with a sharpened edge for improved performance on ice.
- Steering Mechanism: A tiller controls the rudder for navigation.
- Rigging: The DN features a simple rigging system with a single mast and no stays, allowing for easy assembly and disassembly.
- Transport: The boat can be easily disassembled for transport, with the hull, runners, and sail stowed in a compact configuration.
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