Review of Bénéteau 393

Basic specs.

The Bénéteau 393 also known as Moorings 403 is a sailboat designed by the French maritime architect Jean Berret together with Racoupeau also from France in the early 2000. The Bénéteau 393 is built by the French yard Bénéteau.

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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 450.0 liter fresh water capacity.

Rig

The Bénéteau 393 is equipped with a masthead rig. The advantage of a masthead rig is its simplicity and the fact that a given sail area - compared with a fractional rig - can be carried lower and thus with less heeling moment.

Keel

Fin keel

The Bénéteau 393 is equipped with a fin keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a full keel.

The boat can enter most marinas as the draft is just about 1.55 - 1.65 meter (5.09 - 5.39 ft) dependent on the load. See immersion rate below.

Engine

Bénéteau 393 may be equipped with an inboard Volvo Penta diesel engine at 40 hp (29 kW). Calculated max speed is about 6.7 knots

The fuel tank has a capacity of 136.0 liters (35 US gallons, 29 imperial gallons).

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 Bénéteau 393 is 2.02, 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 7.9 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 Bénéteau 393 is about 283 kg/cm, alternatively 1588 lbs/inch.
Meaning: if you load 283 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1588 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 Bénéteau 393 is 24.0.

Comparing this ratio with similar sailboats show that it is more comfortable than 27% 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 Bénéteau 393 is 2.94.

Compared with other similar sailboats it is more spacy than 82% of all other designs. It seems that the designer has chosen a significantly more spacy hull design.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Bénéteau 393 is 177 which categorizes this boat among 'light racers'.

82% of all similar sailboat designs are categorized as heavier. A light displacement requires less sailarea and has higher accellerations.

SA/D (Sail Area Displacement ratio)

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

The SA/D for Bénéteau 393 with ISO 8666 reference sail is 15.4, with a 135% genua the SA/D is 18.2.

The SA/D ratio indicates that it is faster than 31% of all similar sailboat designs in light wind.

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 44m² (473 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 masthead 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	32.0 m	(105.1 feet)	12 mm	(1/2 inch)
Jib/genoa halyard	32.0 m	(105.1 feet)	12 mm	(1/2 inch)
Spinnaker halyard	32.0 m	(105.1 feet)	12 mm	(1/2 inch)
Jib sheet	11.6 m	(38.2 feet)	14 mm	(0.55 inch)
Genoa sheet	11.6 m	(38.2 feet)	14 mm	(0.55 inch)
Mainsheet	29.1 m	(95.4 feet)	14 mm	(0.55 inch)
Spinnaker sheet	25.6 m	(83.9 feet)	14 mm	(0.55 inch)
Cunningham	4.6 m	(15.1 feet)	12 mm	(1/2 inch)
Kickingstrap	9.2 m	(30.2 feet)	12 mm	(1/2 inch)
Clew-outhaul	9.2 m	(30.2 feet)	12 mm	(1/2 inch)

Boat owner's ideas

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

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

Finally

We are always looking for new photos. If you can contribute with photos for Bénéteau 393 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.