Review of Jouët 20 type 2

Basic specs.

The Jouët 20 type 2 aka Sheriff 600 type 2 or Sheriff 20 type 2 aka Sheriff 20 type 2 is a small sailboat designed by the French maritime architect Philippe H. Harlé in the early seventies. A few thousand boats have been produced. The Jouët 20 type 2 is built by the French yard Jouët.

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Hull

The hull is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all.

Interior

The headroom is below average

Engine

An outboard motor is often used on this boat. In that case the boat will typically require a power of 2 - 3 hp, alternatively 36 - 43 lbs thrust if you prefer an electrical motor. Electric outboards are becoming popular for sailboat owners who want clean instant power with less noise and no exhaust fumes.

Sailing characteristics

This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.

Stability and Safety

What is Capsize Screening Formula (CSF)?

The capsize screening value for Jouët 20 type 2 is 2.54, indicating that this boat would not be accepted to participate in ocean races.

Theoretical Maximum Hull Speed

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 5.3 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Jouët 20 type 2 is about 74 kg/cm, alternatively 416 lbs/inch.
Meaning: if you load 74 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 416 lbs cargo on the boat it will sink 1 inch.

Sailing statistics

This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.

Motion Comfort Ratio

What is Motion Comfort Ratio (MCR)?

The Motion Comfort Ratio for Jouët 20 type 2 is 10.9.

Comparing this ratio with similar sailboats show that it is more comfortable than 34% of all similar sailboat designs. This comfort value is just below average.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Jouët 20 type 2 is 2.58.

Compared with other similar sailboats it is more spacy than 66% of all other designs. It seems that the designer has chosen a slightly more spacy hull design.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Jouët 20 type 2 is 221 which categorizes this boat among 'light crusers & offshore racers'.

31% of all similar sailboat designs are categorized as heavier. A heavy displacement combined with smaller water plane area has lower acceleration and is more comfortable.

Maintenance

Rig

If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.

**Guiding dimensions of running rig**
Usage	Length		Diameter
Jib sheet	6.1 m	(19.9 feet)	8 mm	(5/16 inch)
Genoa sheet	6.1 m	(19.9 feet)	8 mm	(5/16 inch)
Mainsheet	15.2 m	(49.9 feet)	8 mm	(5/16 inch)
Spinnaker sheet	13.4 m	(43.9 feet)	8 mm	(5/16 inch)

Boat owner's ideas

This section is reserved boat owner's changes, improvements, etc. Here you might find (or contribute with) inspiration for your boat.

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Finally

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If you have any comments to the review, improvement suggestions, or the like, feel free to contact us. Criticism helps us to improve.

References

[Ref 1]: ISO 8666 Small craft — Principal data.
[Ref 3]: ISO 12215-5 Small craft — Hull construction and scantlings.