Review of Windy 37 Grand Mistral

Basic specs.

The Windy 37 Grand Mistral is a motorboat designed by the maritime architect Hans Jørgen Johnsen. The Windy 37 Grand Mistral is built by the Norwegian yard Windy Boats AS.

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Hull

Both the hull and the deck 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 5-6 berths and 190.0 liter fresh water capacity.

Engine

The Windy 37 Grand Mistral has been equipped with different engine alternatives.

Alternative 1:

The boat may be equipped with an inboard Yanmar Glpstzeb3 diesel engine

Alternative 2:

Windy 37 Grand Mistral may be equipped with dual inboard Volvo Penta KAD 44P Edc diesel engines at 520 hp (387 kW). Max speed is 33.0 knots.

Alternative 3:

The boat may be equipped with dual inboard Volvo Penta D6 310 diesel engines

Alternative 4:

The boat may be equipped with dual inboard Volvo Penta D4-260 Edc diesel engines at 520 hp (387 kW).

The transmission is a saildrive.

The fuel tank has a capacity of 800.0 liters (211 US gallons, 175 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.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Windy 37 Grand Mistral is about 261 kg/cm, alternatively 1462 lbs/inch.
Meaning: if you load 261 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1462 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 Windy 37 Grand Mistral is 3.18.

Compared with other similar motor boats it is slimmer than 58% of all other designs. It seems that the designer has chosen a slightly more speedy hull design.

Curiosities

Powerboat?

In Denmark, you are required to have achieved a 'powerboat driving license' in order to sail a powerboat.
In this context a boat is considered a powerboat if:

Danish definition of a powerboat

According to this definition this boat is not categorized as a Powerboat.
Though, if you install a motor of 127 kW (170 hp), then the boat will become a powerboat, and you will need a Danish 'powerboat driving license'

Maintenance

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 Windy 37 Grand Mistral 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.