The Slipper 42, a centre-cockpit ketch, was designed by Robin Chadworth-Musters & Alan Gurney and built in the UK by Tyler Boat Company Ltd.
Underwater Profile: Fin keel with skeg-hung rudder;
Hull Material: GRP (Fiberglass);
Length Overall: 42'0" (12.8m);
Waterline Length: 30'4" (9.2m);
Beam: 12'3" (3.7m);
Draft: 6'0" (1.8m);
Rig Type: Masthead ketch;
Displacement: 16,500lb (7,484kg);
Designer: Robin Chadworth-Musters & Alan Gurney;
Builder: Tyler Boat Co. Ltd. (UK);
Year First Built: 1978;
Year Last Built: 1979;
Number Built: 13
1. Sail Area/Displacement Ratio: 15.9
2. Ballast/Displacement Ratio: 43.4
3. Displacement/Length Ratio: 264
4. Comfort Ratio: 26.8
5. Capsize Screening Formula: 1.9
1. A Sail Area/Displacement Ratio of 15.9 suggests that the Slipper 42 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 43.4 means that the Slipper 42 will stand up well to her canvas in a blow, helping her to power through the waves.
4. Ted Brewer's Comfort Ratio of 26.8 suggests that crew comfort of a Slipper 42 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 Slipper 42 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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