Review of ILC 40

Basic specs.

The ILC 40 is a sailboat designed by the German maritime architect bureau judel / vrolijk & co - engineering GmbH.

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Keel

Unknown keel type

The boat can only enter major marinas as the draft is about 2.60 - 2.70 meter (8.53 - 8.83 ft) dependent on the load.

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 ILC 40 is 2.14, indicating that this boat would not be accepted to participate in ocean races.

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 ILC 40 is 3.13.

Compared with other similar sailboats it is more spacy than 69% of all other designs. It seems that the designer has chosen a slightly more spacy hull design.

SA/D (Sail Area Displacement ratio)

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

The SA/D for ILC 40 with ISO 8666 reference sail is 25.2, with a 135% genua the SA/D is 28.8.

The SA/D ratio indicates that it is faster than 100% of all similar sailboat designs in light wind.

Maintenance

Rig

Dimensions of sail.

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	43.6 m	(143.0 feet)	12 mm	(1/2 inch)
Jib/genoa halyard	43.6 m	(143.0 feet)	12 mm	(1/2 inch)
Spinnaker halyard	43.6 m	(143.0 feet)	12 mm	(1/2 inch)
Jib sheet	12.5 m	(40.9 feet)	14 mm	(0.55 inch)
Genoa sheet	12.5 m	(40.9 feet)	14 mm	(0.55 inch)
Mainsheet	31.2 m	(102.4 feet)	14 mm	(0.55 inch)
Spinnaker sheet	27.5 m	(90.1 feet)	14 mm	(0.55 inch)
Cunningham	6.2 m	(20.3 feet)	12 mm	(1/2 inch)
Kickingstrap	12.4 m	(40.6 feet)	12 mm	(1/2 inch)
Clew-outhaul	12.4 m	(40.6 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.

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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.