The Hallberg Rassy 42 (Enderlein) Sailboat
Specs & Key Performance Indicators

The Hallberg Rassy 42 (Enderlein) ketch was designed by Christoph Rassy & Olle Enderlein and built in Sweden by Hallberg-Rassy.

Published Specification for the Hallberg Rassy 42 (Enderlein)

Underwater Profile: Fin keel and skeg-hung rudder

Hull Material: GRP (fiberglass)

Length Overall: 42'4" (12.9m) 

Waterline Length: 34'5" (10.5m)

Beam: 12'5" (3.8m)

Draft: 6'9" (2.1m)

Rig Type: Ketch, but a few sloop variants were also produced

Displacement: 25,353lb (11,500kg)

Designer: Christoph Rassy & Olle Enderlein

Builder: Hallberg-Rassy

Year First Built: 1980

Year Last Built: 1991

Number Built: 225

Owners Association: Hallberg-Rassy Owners Association

Published Design Ratios for the Hallberg Rassy 42 (Enderlein)

1. Sail Area/Displacement Ratio: 15.8

  • 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: 39.1

  • Under 40: less stiff, less powerful
  • Over 40: stiffer, more powerful

3. Displacement/Length Ratio: 277

  • Under 100: Ultralight
  • 100 to 200: Light
  • 200 to 275: Moderate
  • 275 to 350: Heavy
  • Over 350: Ultraheavy

4. Comfort Ratio: 37.2

  • 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: 1.7

  • 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 42 (Enderlein)

1. A Sail Area/Displacement Ratio of 15.8 suggests that the Hallberg Rassy 42 (Enderlein) 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 39.1 means that the Hallberg Rassy 42 (Enderlein) will initially stand up reasonably well to her canvas in a moderate breeze, but she'll need a reef in the main to avoid heeling excessively in a gust.

2. A Ballast/Displacement Ratio of ### means that the Hallberg Rassy 42 (Enderlein) will stand up well to her canvas in a blow, helping her to power through the waves.

3. A Displacement/Length Ratio of 277, tells us the Hallberg Rassy 42 (Enderlein) is a heavy displacement cruising boat. You can load her down with all your cruising gear and equipment and it will hardly affect her waterline. Not an ideal choice for coastal sailing, but she'll come into her own on an offshore passage in testing conditions.

4. Ted Brewer's Comfort Ratio of 37.2 suggests that crew comfort of a Hallberg Rassy 42 (Enderlein) 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 1.7 tells us that a Hallberg Rassy 42 (Enderlein) 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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