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The Mariner 40, a long-keeled ketch, was designed by Clair Oberly and built in Japan by Far East Yachts.
Underwater Profile: Long keel
Hull Material: GRP (Fiberglass)
Length Overall: 40'4" (12.3m)
Waterline Length: 30' 2" (9.2m)
Beam: 11'5" (3.5m)
Draft: 5'8" (1.7m)
Rig Type: Masthead Ketch
Displacement: 26,500lb (12,020kg)
Designer: Clair Oberly
Builder: Far East Yachts
1. Sail Area/Displacement Ratio: 15.8
2. Ballast/Displacement Ratio: 34.0
3. Displacement/Length Ratio: 430
4. Comfort Ratio: 47.2
5. Capsize Screening Formula: 1.5
read more about these all-revealing numbers...
1. A Sail Area/Displacement Ratio of 15.8 suggests that the Mariner 40 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 34.0 means that unless the bulk of the ballast is concentrated in a bulb at the foot of her keel, the Mariner 40 will have a tendency to heel excessively in a gust, and she'll need to be reefed early to keep her sailing upright in a moderate breeze.
3. A Displacement/Length Ratio of 430, tells us the Mariner 40 is firmly in the ultra-heavy displacement category. Load her up as much as you like and her performance will be hardly affected, not that it was ever startling. Few if any sailboats are built to this displacement category these days - but they remain popular with some long-distance sailors.
4. Ted Brewer's Comfort Ratio of 47.2 suggests that crew comfort of a Mariner 40 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 1.5 tells us that a Mariner 40 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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