The Bristol 40, a masthead sloop, was designed by Ted Hood and built in the USA by Bristol Yachts.
Underwater Profile: Long keel
Hull Material: GRP (Fibreglass)
Length Overall: 40'2" (12.2m)
Waterline Length: 27'6" (8.4m)
Beam: 10'9" (3.3m)
Draft: 5'4" (1.6m)
Rig Type: Masthead sloop (also available as a yawl or cutter)
Displacement: 17,580lb (7,974kg)
Ballast: 6,500lb (2,948kg)
Designer: Ted Hood
Builder: Bristol Yachts (USA)
Year First Built: 1970
Year Last Built: 1986
Number Built: 149
1. Sail Area/Displacement Ratio: 16.5
2. Ballast/Displacement Ratio: 37.0
3. Displacement/Length Ratio: 376
4. Comfort Ratio: 36.7
5. Capsize Screening Formula: 1.7
1. A Sail Area/Displacement Ratio of 16.5 suggests that the Bristol 40 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 37.0 means that a sailboat like the Bristol 40, is likely to benefit from being reefed early to keep her sailing upright in a moderate breeze.
3. A Displacement/Length Ratio of 376 tells us the Bristol 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 36.7 suggests that crew comfort of a Bristol 40 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 indicates that a Bristol 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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