The Grand Soleil 39 Sailboat
Specs & Key Performance Indicators
The Grand Soleil 39, a moderate displacement masthead sloop, was designed by Alain Jezequel and built in Italy by Cantiere del Pardo.
'Mr X', a Grand Soleil 39, is 41ft overall - not 39 as you might think...
Published Specification for the Grand Soleil 39
Underwater Profile: Fin keel with spade rudder
Hull Material: GRP (Fiberglass)
Length Overall: 41'0" (12.50m)
Waterline Length: 32'4" (9.9m)
Beam: 12'4" (3.8m)
Draft: 6'4" (1.9m)
Rig Type: Masthead Sloop
Displacement: 18,298lb (8,300kg)
Designer: Alain Jezequel
Builder: Cantiere del Pardo (Italy)
Year First Built: 1983
Year Last Built: 1990
Published Design Ratios for the Grand Soleil 39
1. Sail Area/Displacement Ratio: 15.4
- 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: 41.0
- Under 40: less stiff, less powerful
- Over 40: stiffer, more powerful
3. Displacement/Length Ratio: 242
- Under 100: Ultralight
- 100 to 200: Light
- 200 to 275: Moderate
- 275 to 350: Heavy
- Over 350: Ultraheavy
4. Comfort Ratio: 28.5
- 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 Grand Soleil 39
1. A Sail Area/Displacement Ratio of 15.4 suggests that the Grand Soleil 39 will need a good breeze to get her going. In light conditions, unless you've got plenty of time on your hands, motor-sailing may be the way to go.
2. A Ballast/Displacement Ratio of 41.0 means that the Grand Soleil 39 will stand up well to her canvas in a blow, helping her to power through the waves.
3. A Displacement/Length Ratio of 242, tells us the Grand Soleil 39 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 28.5 suggests that crew comfort of a Grand Soleil 39 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 Grand Soleil 39 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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