The Beneteau 50 Sailboat
Specs & Key Performance Indicators
The Beneteau 50, an aft cockpit sloop, was designed by Farr Yacht Design with Armel Briand and built in France by Beneteau.
A Beneteau 50
Published Specification for the Beneteau 50
Underwater Profile: Bulb keel & spade rudder
Hull Material: GRP (Fibreglass)
Length Overall: 50'9" (15.5m)
Waterline Length: 45'5" (13.8m)
Beam: 14'8" (4.5m)
Draft: 7'6" (2.3m)
Rig Type: Masthead sloop
Displacement: 28,660lb (13,000kg)
Designer: Farr Yacht Design with Armel Briand
Builder: Beneteau (France)
Year First Built: 1995
Year Last Built: 2004
Number Built: 200
Owners Association: Beneteau Owners Club
Published Design Ratios for the Beneteau 50
1. Sail Area/Displacement Ratio: 17.6
- Less than 16 would be considered under-powered;
- 16 to 20 would indicate reasonably good performance;
- Over 20 suggests relatively high performance.
2. Ballast/Displacement Ratio: 32.5
- Under 40: less stiff, less powerful
- Over 40: stiffer, more powerful
3. Displacement/Length Ratio: 137
- Under 100: Ultralight
- 100 to 200: Light
- 200 to 275: Moderate
- 275 to 350: Heavy
- Over 350: Ultraheavy
4. Comfort Ratio: 26.4
- Under 20 indicates a lightweight racing boat
- 20 to 30 indicates a coastal cruiser
- 30 to 40 indicates a moderate offshore cruising boat
- 40 to 50 indicates a heavy offshore boat
- Over 50 indicates an extremely heavy offshore boat
5. Capsize Screening Formula: 1.9
- Under 2.0 (the lower the better): Better suited for ocean passages
- Over 2.0: Less suited for ocean passages
read more about these Key Performance Indicators...
Summary Analysis of the Design Ratios for the Beneteau 50
1. A Sail Area/Displacement Ratio of 17.6 suggests that the Beneteau 50 will, in the right conditions, approach her maximum hull speed readily and satisfy the sailing performance expectations of most cruising sailors.
2. A Ballast/Displacement Ratio of 32.5 would usually mean that the Beneteau 50 would have a tendency to heel uncomfortably in a gust, and need to be reefed early to keep her sailing upright in a moderate breeze.
However, as she has much of her ballast concentrated in a bulb at the foot of her keel, she's likely to be considerably stiffer than her published Ballast/Displacement Ratio might suggest.
3. A Displacement/Length Ratio of 137 tells us the Beneteau 50 is clearly a light displacement sailboat. If she's loaded with too much heavy cruising gear her performance will suffer to a degree.
4. Ted Brewer's Comfort Ratio of 26.4 suggests that crew comfort of a Beneteau 50 in a seaway is similar to what you would associate with the motion of a coastal cruiser with moderate stability, which is not encouraging news for anyone prone to seasickness.
5. The Capsize Screening Formula (CSF) of 1.9 tells us that a Beneteau 50 would be a safer choice of sailboat for an ocean passage than one with a CSF of more than 2.0.
Other sailboats in the Beneteau product range include:
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