The Nicholson 476 Sailboat
Specs & Key Performance Indicators
The Nicholson 476, a centre-cockpit cutter, was designed and built in the UK by Camper & Nicholson Ltd.
A Nicholson 476
Published Specification for the Nicholson 476
Underwater Configuration: Fin keel & skeg-hung rudder
Hull Material: GRP (Fibreglass)
Length Overall: 46'8" (14.2m)
Waterline Length: 36'3" (11.1m)
Beam: 13'8" (4.2m)
Draft: 5'10" (1.8m)
Rig Type: Cutter
Displacement: 33,000lb (10,886kg)
Designer: Camper & Nicholson Ltd
Builder: Camper & Nicholson Ltd (UK)
Year First Built: 1984
Year Last Built: 1989
Number Built: 11
Published Design Ratios for the Nicholson 476
1. Sail Area/Displacement Ratio: 15.5
- 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: 40.0
- Under 40: less stiff, less powerful
- Over 40: stiffer, more powerful
3. Displacement/Length Ratio: 309
- Under 100: Ultralight
- 100 to 200: Light
- 200 to 275: Moderate
- 275 to 350: Heavy
- Over 350: Ultraheavy
4. Comfort Ratio: 40.0
- 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 Nicholson 476
1. A Sail Area/Displacement Ratio of 15.5 suggests that the Nicholson 476 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. A Ballast/Displacement Ratio of 40.0 means that the Nicholson 476 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.
3. A Displacement/Length Ratio of 309, tells us the Nicholson 476 is clearly 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 40.0 suggests that crew comfort of a Nicholson 476 in a seaway is similar to what you would associate with the motion of a heavy bluewater cruising boat. Pitching and rolling will be well damped - your cup of coffee on the salon table stands a reasonable chance of staying there in most conditions.
5. The Capsize Screening Formula (CSF) of 1.7 tells us that a Nicholson 476 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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