Published Specification for the Jeanneau Sun Odyssey 45
Underwater Profile: Bulb fin keel & spade rudder
Hull Material: GRP (Fibreglass)
Length Overall: 45'0" (13.7m)
Waterline Length: 38'1" (11.6m)
Beam: 14'4" (4.4m)
Draft: 6'9" (2.1m)
Rig Type: Fractional sloop
Displacement: 21,826lb (9,900kg)
Designer: Philippe Briand
Builder: Jeanneau (France)
Year First Built: 2004
Year Last Built: 2009
Published Design Ratios for the Jeanneau Sun Odyssey 45
1. Sail Area/Displacement Ratio: 22.3
- 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: 29.8
- Under 40: less stiff, less powerful
- Over 40: stiffer, more powerful
3. Displacement/Length Ratio: 176
- Under 100: Ultralight
- 100 to 200: Light
- 200 to 275: Moderate
- 275 to 350: Heavy
- Over 350: Ultraheavy
4. Comfort Ratio: 24.2
- 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: 2.1
- 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 Jeanneau Sun Odyssey 45
1. A Sail Area/Displacement Ratio of 22.3 suggests that, in the right hands, the Jeanneau Sun Odyssey 45 will have enough performance to leave most other sailboats of similar waterline length well astern.
2. A Ballast/Displacement Ratio of 29.8 would usually mean that the Jeanneau Sun Odyssey 45 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 176, tells us the Jeanneau Sun Odyssey 45 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 24.2 suggests that crew comfort of a Jeanneau Sun Odyssey 45 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 of 2.1 tells us that a Jeanneau Sun Odyssey 45 would not be as good a choice of sailboat for ocean passage-making, owing to the increased risk of capsize in strong winds and heavy seas when compared to a sailboat with a CSF of less than 2.0.