Review of Boheme la Grande

Basic specs.

The Boheme la Grande aka Boheme La Grande 820 is a sailboat designed by the Danish maritime architect Per Qvist in the late seventies. The Boheme la Grande is built by the Danish yard Dantec Marine ApS.

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Hull

The hull is made of plywood.

Interior

Note: the boat has also been sold to be self-made/-interiored, which means that the quality of each boat may vary.

Rig

The boat equipped with a fractional rig. A fractional rig has smaller headsails which make tacking easier, which is an advantage for cruisers and racers, of course. The downside is that having the wind from behind often requires a genaker or a spinnaker for optimal speed.

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 Boheme la Grande is 2.29, indicating that this boat would not be accepted to participate in ocean races.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Boheme la Grande is about 160 kg/cm, alternatively 896 lbs/inch.
Meaning: if you load 160 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 896 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 Boheme la Grande is 2.75.

Compared with other similar sailboats it is more spacy than 85% of all other designs. It seems that the designer has chosen a significantly more spacy hull design.

RSP (Relative Speed Performance)

What is Relative Speed Performance?

The Relative Speed Performance for Boheme la Grande is 62

The relative speed performance is 62 which means that a it is faster than 62% of all similar sailboat designs.

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	8.1 m	(26.6 feet)	10 mm	(3/8 inch)
Genoa sheet	8.1 m	(26.6 feet)	10 mm	(3/8 inch)
Mainsheet	20.2 m	(66.4 feet)	10 mm	(3/8 inch)
Spinnaker sheet	17.8 m	(58.5 feet)	10 mm	(3/8 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

We are always looking for new photos. If you can contribute with photos for Boheme la Grande 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.