The published design ratios for the Cavalier 39 are as follows :
- Sail Area/Displacement Ratio: 18.5
- Ballast/Displacement Ratio: 40.1%
- Displacement/Length Ratio: 325
- Comfort Ratio: 35.2
- Capsize Screening Formula: 1.7
Based on these ratios, the Cavalier 39 is likely to perform well under sail in the following ways:
- It will have a good sailing speed and responsiveness in moderate to strong winds, as indicated by the Sail Area/Displacement Ratio of 18.5, which is above the average of 16 for cruising boats.
- It will be stable and stiff, resisting heeling and capsizing, as indicated by the Ballast/Displacement Ratio of 40.1%, which is above the average of 35% for cruising boats, and the Capsize Screening Formula of 1.7, which is below the threshold of 2.0 for safe offshore passage.
- It will be comfortable and seaworthy, with a smooth and predictable motion in waves, as indicated by the Displacement/Length Ratio of 325, which is in the range of heavy displacement cruising boats, and the Comfort Ratio of 35.2, which is above the average of 30 for cruising boats.
The Cavalier 39 is a well-designed boat for bluewater cruising, with a good balance of performance, stability, and comfort. However, it may not be very agile or fast in light winds or coastal sailing, as it is a heavy boat with a relatively low sail area.