The Corvette 31 Sailboat

The Corvette 31, a centreboard sloop, was designed by C&C Yachts and built in Canada by Belleville Marine Yards.

A very pretty sloop-rigged sailboat from the 1960s - 'Quoin', a C&C Corvette 31'Quoin', a C&C Corvette 31

Published Specification for the Corvette 31

Underwater Profile: Centreboard keel

Hull Material: GRP

Length Overall: 31'2" / 9.50m

Waterline Length: 22'6" / 6.9m

Beam: 9'1" / 2.8m

Draft: 7'0" / 2.1m (max), 3'3" / 1.0m (min)

Rig Type: Masthead sloop

Displacement: 8,545lb / 3,876kg

Designer: C&C

Builder: Belleville Marine Yards (Canada)

Year First Built: 1966

Year Last Built: 1971

Number Built: 171

Published Design Ratios for the Corvette 31

1. Sail Area/Displacement Ratio: 17.0

2. Ballast/Displacement Ratio: 46.8

3. Displacement/Length Ratio: 335

4. Comfort Ratio: 27.9

5. Capsize Screening Formula: 1.8

read more about these all-revealing numbers...

Summary Analysis of the Design Ratios for the Corvette 31

1. A Sail Area/Displacement Ratio of 17.0 suggests that the Corvette 31 will approach her maximum hull speed readily and satisfy the sailing performance expectations of most cruising sailors.

2. A Ballast/Displacement Ratio of 46.8 means that the Corvette 31 will stand up well to her canvas in a blow, helping her to power through the waves.

3. A Displacement/Length Ratio of 335, tells us the Corvette 31 is clearly a heavy displacement cruising boat. You can load her down with all your cruising gear and equipment and it will hardly affect her waterline. Not an ideal choice for coastal sailing, but she'll come into her own on an offshore passage in testing conditions

4. Ted Brewer's Comfort Ratio of 27.9 suggests that crew comfort of a Corvette 31 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 1.8 tells us that a Corvette 31 would be a safer choice of sailboat for an ocean passage than one with a CSF of more than 2.0. 

Cruisers' Questions about this Sailboat...

Why is the Corvette 31 called a 'Corvette'?

The Corvette 31 is a Canadian sailboat, which was designed by C&C Design in 1965 and is named in honour of the Corvette warship class.

Are there any other Corvette sailboats?

Yes, there other Corvettes, but they are not related to the Corvette 31. They are:

  • The Corvette boats, which are a series of motor yachts built by various manufacturers, such as Corvette Marine, Dyna Yachts, and Fairline Boats. They range from 32 to 63 feet in length and have different designs and features.
  • The Corvette 32, which is a different sailboat model designed by John Bennett and built by Corvette Yachts in the UK from 1974 to 1988. It is a trawler-style motor sailer with a long keel, a ketch rig, and a pilothouse. It displaces 14,000 lb (6,350 kg) and carries 5,000 lb (2,268 kg) of ballast. It has a draft of 3.75 ft (1.14 m) and a sail area of 500 sq ft (46 m2).

What is the price of a Corvette 31 sailboat?

The initial price in 1966 was $12,500. The current market value depends on the condition and equipment of the boat, but it can range from $10,000 to $25,000.

What are the good points of a Corvette 31 sailboat?

  • It is a sturdy and seaworthy boat that can handle rough weather and long voyages.
  • It has a spacious and comfortable interior that can sleep up to five people.
  • It has a classic and elegant design that appeals to many sailors.
  • It has a retractable centreboard that allows it to explore shallow waters and anchorages.
  • It has a loyal and active owners association that provides support and information.

How can I find or contact other Corvette 31 owners?

You can find or contact other Corvette 31 owners through the Corvette Sailboat Association website (, which offers membership benefits, newsletters, forums, events, photos, stories, technical tips, classified ads, and more.

The above answers were drafted by using GPT-4 (OpenAI’s large-scale language-generation model) as a research assistant to develop source material; to the best of our knowledge, we believe them to be accurate.

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