The Dufour 29 Sailboat
Specs & key Performance Indicators

The Dufour 29, a masthead sloop, was designed by Michel Dufour and built in France by Dufour Yachts. 

A Dufour 29 sailboat launches the spinnakerA Dufour 29 sailing slowly in very light winds under her spinnaker

Published Specification for the Dufour 29

Underwater Configuration:  Fin with skeg-hung rudder

Hull Material:  GRP (fibreglass)

Length Overall: 29' 4" / 8.94m

Waterline Length: 25' 1" / 7.64m

Beam: 9' 8" / 2.95m

Draft: 5' 3" / 1.60m

Rig Type: Masthead Sloop

Displacement: 7,250lb / 3,289kg

Designer: Michel Dufour

Builder: Dufour (France)

Year First Built: 1975

Year Last Built: 1984

Owners Association: Dufour Owners Association

Published Design Ratios for the Dufour 29

1. Sail Area/Displacement Ratio: 15.6

  • 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: 36.5

  • Under 40: less stiff, less powerful
  • Over 40: stiffer, more powerful

3. Displacement/Length Ratio: 205

  • Under 100: Ultralight
  • 100 to 200: Light
  • 200 to 275: Moderate
  • 275 to 350: Heavy
  • Over 350: Ultraheavy

4. Comfort Ratio: 20.7

  • 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: 2.0

  • Under 2.0 (the lower the better): Better suited for ocean passages
  • Over 2.0: Less suited for ocean passages

read more about these all-revealing numbers...

Summary Analysis of Published Design Ratios for the Dufour 29

1. A Sail Area/Displacement Ratio of just 15.6 suggests that she'll need a stiff breeze to get her going. In any other conditions, unless you've got plenty of time on your hands, motor-sailing will be the way to go.

2. A Ballast/Displacement Ratio of 36.5 means that a sailboat like the Dufour 29 (which doesn't have a stiffness-enhancing bulb keel), is likely to benefit from being reefed early to keep her sailing upright in a moderate breeze.

3. A Displacement/Length Ratio of 205, tells us she's 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 20.7 suggests that crew comfort in a seaway is similar to what you would associate with the motion of a coastal cruiser, which is not encouraging news for anyone prone to seasickness. 

5. The Capsize Screening Formula (CSF) of 2.0 indicates that a Dufour 29 would not be the wisest choice of sailboat for ocean passage-making owing to the lower resistance to capsize in strong winds and heavy seas that is associated with sailboats with a CSF of 2.0 and above.

Other sailboats in the Dufour range include:


Recent Articles

  1. Used Sailing Equipment For Sale

    Jan 21, 23 01:37 PM

    Here's where people with sailing equipment for sale advertise their stuff entirely free of charge. If you're looking for used sailing gear or other used boating accessories, here's where to find it!

    Read More

  2. 'Sea Wraith', a Hustler 35 Sailboat for Sale

    Jan 21, 23 08:28 AM

    The Hustler 35 sailboat is a hugely capable classic offshore cruiser. My 'Sea Wraith' has recently had an extensive mechanical and equipment refurbishment to ensure she is absolutely ready to take on…

    Read More

  3. Popular Cruising Yachts from 50-55ft (15.2m to 16.8m) Length Overall

    Jan 11, 23 09:07 AM

    Large, well-equipped cruising yachts of this size can cross oceans in relative comfort and speed, but you'll need deep pockets to operate and maintain them.

    Read More