505

Main

Appendages
Centerboard Dinghy
Construction
Wood/FG
First built hull
1954
Hull type
Monohull
Model
505
Sailboat builder
Various
Sailboat designer
John Westell/Austin Farrar

Dimensions

Beam
1.88
Displacement
127.0
Draft
1.42
Max Draft
1.42
Min Draft
0.15
Overall length
5.03
Waterline length
4.57

Sails

Total area
16.26

Engine

Performance

Capsize Screening Formula
3.78
Comfort Ratio
2.47
Critical hull speed
5.19
Displacement-length ratio (DLR)
37.04
Upwind sail area to displacement
65.49

Accomodation

The 505 sailing boat is a high-performance two-person racing dinghy. It was designed in 1954 by John Westell, a British naval architect, and has since become a popular choice for competitive sailing around the world. Here are some key features and characteristics of the 505 sailing boat:

1. Design: The 505 is a planing hull design, which means it is capable of reaching high speeds by rising up and skimming across the water's surface. It has a sleek and streamlined shape, optimized for speed and maneuverability.

2. Length and Weight: The 505 has a length of 5.05 meters (16 feet 7 inches) and weighs around 127 kilograms (280 pounds). Its lightweight construction allows for quick acceleration and nimble handling.

3. Rigging: The boat features a two-person trapeze system, where both sailors can hang out over the side of the boat to counterbalance the heeling force of the wind. This allows for greater stability and control, especially in strong winds.

4. Sails: The 505 typically uses a mainsail and a jib, both made of lightweight and durable materials. The sail area is around 13.94 square meters (150 square feet), providing ample power for fast sailing.

5. Performance: The 505 is known for its exceptional performance in a wide range of conditions. It is highly responsive to sail trim and weight distribution, allowing skilled sailors to optimize speed and efficiency. The boat is often raced in various regattas and championships worldwide.

6. Accessibility: While the 505 is primarily a racing boat, it can also be enjoyed by recreational sailors. Its design and handling characteristics make it suitable for both experienced sailors looking for a competitive edge and those seeking an exciting sailing experience.

7. Class Association: The International 505 Class Association (ICA) governs the rules and regulations for 505 racing. The ICA organizes events, maintains class standards, and promotes the boat's development and growth.

Overall, the 505 sailing boat is a fast and versatile dinghy that offers thrilling sailing experiences for both competitive racers and recreational sailors. Its design, performance, and active class association have contributed to its enduring popularity in the sailing community.

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