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.
The Slipper 42 sailboat is a moderate displacement sailboat which is slightly underpowered, but is very stable/stiff and has a good righting capability if capsized. The fuel capacity is good however and she has a good water supply range.
The Slipper 42 started life as the Rancher 41, for which Tyler Boat Works acquired the molds. They raised the topsides about a foot and discarded the bolt-on keel and spade rudder in favor of internal ballast and a skeg rudder. This converted a racing hull into a cruising boat.
The Slipper 42 has two dedicated sleeping cabins with double berths.
Robin Chadworth-Musters is a yacht designer who has designed several sailboats. One of his sailboats is the Slipper 42 shown here, which he designed in collaboration with Alan Gurney.
Alan Gurney was a British sailboat designer who designed boats the old fashioned way with drafting pencil on velum, using splines and ducks (weights), a planimeter, and a seaman’s eye. He thought like the water through which he had sailed, in England, transatlantic, the USA, both polar regions and much of what lay in between. He was tasked to design a suitable replacement for the famous Herreshoff design Ticonderoga, and produced one of the greatest designs of the past 50 years called Windward Passage.
Here is a list of some of his sailboat designs:
Tyler Boat Company was founded by John Tyler in the 1960s. The company was known for building fiberglass yachts and sailboats. Tyler's primary business was in the manufacture of pre-fabricated buildings for the housing of livestock. Here is a list of some of the sailboats built by Tyler Boat Company:
This additional info was drafted by sailboat-cruising.com using GPT-4 (OpenAI’s large-scale language-generation model) as a research assistant to develop source material, and believes it to be accurate to the best of their knowledge.
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