Review of Cobo 40

Basic specs.

The Cobo 40 is a large sailboat designed by the New Zealander maritime architect Ron Holland. The Cobo 40 is built by Cobo.

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Keel

Unknown keel type

The boat can only enter major marinas as the draft is about 2.29 - 2.39 meter (7.51 - 7.81 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 Cobo 40 is about 303 kg/cm, alternatively 1698 lbs/inch.
Meaning: if you load 303 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1698 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 Cobo 40 is 3.22.

Compared with other similar sailboats it is more spacy than 58% of all other designs. It seems that the designer has chosen a slightly 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	12.1 m	(39.6 feet)	14 mm	(0.55 inch)
Genoa sheet	12.1 m	(39.6 feet)	14 mm	(0.55 inch)
Mainsheet	30.2 m	(99.0 feet)	14 mm	(0.55 inch)
Spinnaker sheet	26.6 m	(87.1 feet)	14 mm	(0.55 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

We are always looking for new photos. If you can contribute with photos for Cobo 40 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.