The Dehler 43 CWS Sailboat
Specs & Key Performance Indicators
The Dehler 43 CWS, a fractionally rigged sloop, was designed by E. G. Van de Stadt and built in Germany by Dehler Yachts.
A Dehler 43 CWS
Published Specification for the Dehler 43 CWS
Underwater Profile: Bulb fin keel & spade rudder
Hull Material: GRP (Fibreglass)
Length Overall: 43'4" (13.2m)
Waterline Length: 34'9" (10.6m)
Beam: 12'9" (3.9m)
Draft: 6'9" (2.1m)
Rig Type: Fractional sloop
Displacement: 19,180lb (8,700kg)
Ballast: 8,377lb (3,800kg)
Designer: E. G. Van de Stadt
Builder: Dehler Yachts (Germany)
Year First Built: 1985
Dehler 46 CWS Accommodation Plan
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Published Design Ratios for the Dehler 43 CWS
1. Sail Area/Displacement Ratio: 22.2
- 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: 43.7
- Under 40: less stiff, less powerful
- Over 40: stiffer, more powerful
3. Displacement/Length Ratio: 204
- Under 100: Ultralight
- 100 to 200: Light
- 200 to 275: Moderate
- 275 to 350: Heavy
- Over 350: Ultraheavy
4. Comfort Ratio: 26.6
- 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 Dehler 43 CWS
1. A Sail Area/Displacement Ratio of 22.2 suggests that, in the right hands, the Dehler 43 CWS will have enough performance to leave most other sailboats of similar waterline length well astern.
2. A Ballast/Displacement Ratio of 43.7 means that the Dehler 43 CWS will stand up well to her canvas in a blow, helping her to power through the waves.
3. A Displacement/Length Ratio of 204, tells us the Dehler 43 CWS is a moderate displacement cruiser, which means she'll carry all your cruising gear without it having a dramatic effect on her performance. Most of today's sailboats intended for offshore cruising fall into this displacement category.
4. Ted Brewer's Comfort Ratio of 26.6 suggests that crew comfort of a Dehler 43 CWS in a seaway is similar to what you would associate with the motion of a coastal cruiser with moderate stability, which is not the best of news for anyone prone to seasickness.
5. The Capsize Screening Formula (CSF) of 1.9 indicates that a Dehler 43 CWS would be a safer choice of sailboat for an ocean passage than one with a CSF of more than 2.0.
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