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 sailboatA 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 43 CWS accommodation planDehler 46 CWS Accommodation Plan

Read more about the latest sailboats in the Dehler range...

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. 

Other sailboats in the Dehler range include:

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