The Westerly Oceanlord 41 Sailboat
Specs & Key Performance Indicators
The Westerly Oceanlord 41, a masthead sloop, was designed by Ed Dubois & Mike Parham and built in the UK by Westerly Yachts Ltd.
A Westerly Oceanlord 41 making good progress to windward
Published Specification for the Westerly Oceanlord 41
Underwater Profile: Fin keel with spade rudder;
Hull Material: GRP (Fiberglass);
Length Overall: 40'6" (12.3m);
Waterline Length: 35'3" (10.7m);
Beam: 13'6" (4.1m);
Draft: 5'6" (1.7m);
Rig Type: Masthead Sloop;
Displacement: 20,878lb (9,470kg);
Designer: Ed Dubois, Mike Parham;
Builder: Westerly Yachts Ltd (UK);
Year First Built: 1990;
Number Built: 100
Owners Association: Westerly Owners Association.
Published Design Ratios for the Westerly Oceanlord 41
1. Sail Area/Displacement Ratio: 14.9
- 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: not published
- Under 40: less stiff, less powerful
- Over 40: stiffer, more powerful
3. Displacement/Length Ratio: 213
- Under 100: Ultralight
- 100 to 200: Light
- 200 to 275: Moderate
- 275 to 350: Heavy
- Over 350: Ultraheavy
4. Comfort Ratio: 27.4
- 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 Westerly Oceanlord 41
1. A Sail Area/Displacement Ratio of just 14.9 suggests that the Westerly Oceanlord 41 will need a stiff breeze to get her going. In light conditions, unless you've got plenty of time on your hands, motor-sailing may be the way to go.
2. The Ballast/Displacement Ratio of the Westerly Oceanlord 41 doesn't appear to have been published. If you are able to provide it, please contact us.
3. A Displacement/Length Ratio of 213, tells us the Westerly Oceanlord 41 is a moderate displacement cruiser, which means she'll carry all your cruising gear without it having a dramatic effect on her performance. Most of today's sailboats intended for offshore cruising fall into this displacement category.
4. Ted Brewer's Comfort Ratio of 27.4 suggests that crew comfort of a Westerly Oceanlord 41 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 1.9 tells us that a Westerly Oceanlord 41 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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