The Hallberg-Rassy 37 Sailboat
Specs & Key Performance Indicators
The Hallberg-Rassy 37, a centre cockpit sloop, was designed by German Frers and built in Sweden by Hallberg-Rassy.
The Hallberg-Rassy 37
Published Specification for the Hallberg-Rassy 37
Underwater Profile: Bulb fin keel & spade rudder
Hull Material: GRP (Fibreglass)
Length Overall: 37'2" (11.3m)
Waterline Length: 33'6" (10.2m)
Beam: 11'8" (3.6m)
Draft: 6'3" (1.9m)
Rig Type: Masthead sloop
Displacement: 16,534lb (7,500kg)
Designer: German Frers
Builder: Hallberg-Rassy (Sweden)
Year First Built: 2003
Year Last Built: 2012
Number Built: 200
Published Design Ratios for the Hallberg-Rassy 37
1. Sail Area/Displacement Ratio: 18.4
- 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: 42.7
- Under 40: less stiff, less powerful
- Over 40: stiffer, more powerful
3. Displacement/Length Ratio: 197
- Under 100: Ultralight
- 100 to 200: Light
- 200 to 275: Moderate
- 275 to 350: Heavy
- Over 350: Ultraheavy
4. Comfort Ratio: 28.1
- 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: 1.8
- 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 Hallberg-Rassy 37
1. A Sail Area/Displacement Ratio of 18.4 suggests that the Hallberg-Rassy 37 will, in the right conditions, approach her maximum hull speed readily and satisfy the sailing performance expectations of most cruising sailors.
2. A Ballast/Displacement Ratio of 42.7 means that the Hallberg-Rassy 37 will stand up well to her canvas in a blow, helping her to power through the waves.
3. A Displacement/Length Ratio of 192, tells us the Hallberg-Rassy 37 is clearly a light-to-moderate displacement sailboat. If she's loaded with too much heavy cruising gear and equipment her performance will suffer to a degree.
4. Ted Brewer's Comfort Ratio of 28.1 suggests that crew comfort of a Hallberg-Rassy 37 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 1.8 indicates that a Hallberg-Rassy 37 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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