Review of Contest 42

Basic specs.

The Contest 42 is a large sailboat designed by the Dutch maritime architect Dick Zaal in the late seventies. Less than 100 boats have been produced. The Contest 42 is built by the Dutch yard Conyplex N.V..

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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.

Interior

The boat is equipped with 9 berths.
The headroom is above average

Rig

The boat equipped with a ketch rig.

Keel

The boat can only enter major marinas as the draft is about 2.07 - 2.17 meter (6.79 - 7.09 ft) dependent on the load. See immersion rate below.

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 Contest 42 is 1.74, indicating that this boat could - if evaluated by this formula alone - 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 7.7 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 Contest 42 is about 268 kg/cm, alternatively 1500 lbs/inch.
Meaning: if you load 268 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1500 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 Contest 42 is 38.1.

Comparing this ratio with similar sailboats show that it is more comfortable than 85% of all similar sailboat designs. This is a comfort value significantly above average.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Contest 42 is 3.25.

Compared with other similar sailboats it is more spacy than 62% 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 Contest 42 is 346 which categorizes this boat among 'heavy cruisers'.

8% 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.

SA/D (Sail Area Displacement ratio)

What is SA/D (Sail Area Displacement ratio)?

The SA/D for Contest 42 with ISO 8666 reference sail is 10.6, with a 135% genua the SA/D is 12.8.

The SA/D ratio indicates that it is faster than 1% of all similar sailboat designs in light wind.

Over- / underrigged

The Contest 42 has more rig than 8% of all similar sailboats, which indicates that the boat is significantly underrigged.

Maintenance

Bottom Paint

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 46m² (495 ft²).
Based on this, your favourite maritime shop can tell you the quantity you need.

Note: If you use a paint roller you will need more paint than if you use a paintbrush.

Rig

Dimensions of sail for ketch rig.

Are your sails worn out? You might find your next sail here: Sails for Sale

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
Mainsail halyard	32.6 m	(107.0 feet)	12 mm	(1/2 inch)
Jib/genoa halyard	32.6 m	(107.0 feet)	12 mm	(1/2 inch)
Spinnaker halyard	32.6 m	(107.0 feet)	12 mm	(1/2 inch)
Jib sheet	13.0 m	(42.7 feet)	14 mm	(0.55 inch)
Genoa sheet	13.0 m	(42.7 feet)	14 mm	(0.55 inch)
Mainsheet	32.5 m	(106.6 feet)	14 mm	(0.55 inch)
Spinnaker sheet	28.6 m	(93.8 feet)	14 mm	(0.55 inch)
Cunningham	3.7 m	(12.1 feet)	12 mm	(1/2 inch)
Kickingstrap	7.4 m	(24.2 feet)	12 mm	(1/2 inch)
Clew-outhaul	7.4 m	(24.2 feet)	12 mm	(1/2 inch)

Boat owner's ideas

This section shown boat owner's changes, improvements, etc. Here you might find inspiration for your boat.

Do you have changes/improvements you would like to share? Upload a photo and describe what to look for.

Finally

We are always looking for new photos. If you can contribute with photos for Contest 42 it would be a great help.

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.