The X-612 Sailboat
Specs & Key Performance Indicators
The X-612, an aft-cockpit sloop, was designed by Niels Jeppesen and built in Denmark by X-Yachts.
Published Specification for the X-612
- Underwater Profile: Fin keel with bulb & spade rudder
- Hull Material: GRP (Fibreglass)
- Length Overall: 60'0" (18.3m)
- Waterline Length: 52'1" (15.9m)
- Beam: 16'9" (5.1m)
- Draft: 9'6" (2.9m)
- Rig Type: Masthead Sloop
- Displacement: 47,400lb (21,500kg)
- Designer: Niels Jeppesen
- Builder: X-Yachts (Denmark)
- Year First Built: 1995
- Year Last Built: 2004
- Number Built: 12
Published Design Ratios for the X-612
1. Sail Area/Displacement Ratio: 23.0
- 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: 42.3
- Under 40: less stiff, less powerful
- Over 40: stiffer, more powerful
3. Displacement/Length Ratio: 150
- Under 100: Ultralight
- 100 to 200: Light
- 200 to 275: Moderate
- 275 to 350: Heavy
- Over 350: Ultraheavy
4. Comfort Ratio: 31.5
- 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 X-612
1. A Sail Area/Displacement Ratio of 23.0 suggests that, in the right hands, the X-612 will have enough performance to leave most other sailboats of similar waterline length well astern.
2. A Ballast/Displacement Ratio of 42.3 means that the X-612 will stand up well to her canvas in a blow, helping her to power through the waves.
3. A Displacement/Length Ratio of 150, tells us the X-612 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 31.5 suggests that crew comfort of a X-612 in a seaway is similar to what you would associate with the motion of a moderate bluewater cruising boat - a predictable and acceptable motion for most seasoned sailors.
5. The Capsize Screening Formula (CSF) of 1.9 tells us that a X-612 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 X-Boats range include:
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