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Sailboat Specifications

Nonsuch 40

Cat (Unstayed) · Fin W/Spade Rudder

Designed by Mark Ellis · Built by Sen Koh Shipbuilding (Taiwan) · First built 1988

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LOA 44.95 ft  ·  Beam 14.11 ft  ·  Displacement 26,896.00 lb  ·  Cat (Unstayed)  ·  Fin W/Spade Rudder
About the Nonsuch 40 Sailboat

Mark Ellis designed this distinctive catboat as part of the renowned Nonsuch series, building on the legacy of unstayed rigs that made these vessels instantly recognizable on the water. With only five hulls completed by Sen Koh Shipbuilding in Taiwan starting in 1988, the Nonsuch 40 represents one of the rarer entries in this celebrated lineup. The boat's single-sail cat rig eliminates the complexity of stays and shrouds, making it particularly appealing to shorthanded sailors and those seeking simplified sail handling. This configuration, combined with the fin keel and spade rudder arrangement, delivers respectable performance while maintaining the series' reputation for ease of operation. The generous beam of over 14 feet provides excellent interior volume and stability, while the moderate displacement suggests a good balance between comfort and sailing ability. Built for serious cruising, this design suits coastal and offshore passages equally well. The comfort ratio of 29.5 indicates a relatively stiff, seakindly motion, while the capsize screening value of 1.89 falls within acceptable offshore sailing parameters. The fiberglass construction ensures durability, and the hull's lines allow for a theoretical hull speed approaching 8.5 knots, making this a capable passage-maker for those who appreciate the unique character of unstayed rigs.

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Dimensions & Specifications
LOA (Length Overall) 44.95 ft / 13.70 m
LWL (Waterline Length) 40.03 ft / 12.20 m
Beam 14.11 ft / 4.30 m
Max Draft 6.56 ft / 2.00 m
Displacement 26,896.00 lb / 12,200 kg
Ballast Type Lead
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Cat (unstayed)
Construction FG
Designer Mark Ellis
Builder Sen Koh Shipbuilding (TAIWAN)
First Built 1988
Number Built 5
Associations Nonsuch Association (International)
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Frequently Asked Questions

What is the Nonsuch 40's comfort ratio?

The Nonsuch 40 has a Ted Brewer Comfort Ratio of 29.5. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Nonsuch 40 safe for offshore sailing?

The Nonsuch 40 has a Capsize Screening Formula value of 1.89. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Nonsuch 40?

The theoretical hull speed of the Nonsuch 40 is 8.48 kn knots, calculated from its waterline length.

How much does a Nonsuch 40 weigh?

The Nonsuch 40 has a displacement of 26,896.00 lb and a length overall (LOA) of 44.95 ft.

Who designed the Nonsuch 40?

The Nonsuch 40 was designed by Mark Ellis, first built in 1988.