Review of OVNI 390

Basic specs.

The OVNI 390 is a large sailboat designed by the French maritime architect Philippe Briand. The OVNI 390 is built by the French yard SAS Alubat Chantier Naval.

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Hull

The hull is made of aluminium.

Keel

The boat can enter most marinas as the draft is just about 1.76 - 1.86 meter (5.77 - 6.07 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.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for OVNI 390 is about 340 kg/cm, alternatively 1904 lbs/inch.
Meaning: if you load 340 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1904 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.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for OVNI 390 is 3.00.

Compared with other similar sailboats it is more spacy than 79% of all other designs. It seems that the designer has chosen a significantly more spacy hull design.

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	12.3 m	(40.5 feet)	14 mm	(0.55 inch)
Genoa sheet	12.3 m	(40.5 feet)	14 mm	(0.55 inch)
Mainsheet	30.9 m	(101.3 feet)	14 mm	(0.55 inch)
Spinnaker sheet	27.2 m	(89.1 feet)	14 mm	(0.55 inch)

Boat owner's ideas

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