Review of Minor 31

Basic specs.

The Minor 31 is a motorboat designed in the late 2000. The Minor 31 is built by the Finnish yard Sarins Boats Ltd.

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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. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all.

Interior

The boat is equipped with 6 berths, a galley, 100.0 liter fresh water capacity, toilet facility and 40.0 liter waste water capacity.

Engine

The Minor 31 has been equipped with different engine alternatives.

Alternative 1:

The boat may be equipped with an inboard Volvo Penta D6 - 370 diesel engine at 370 hp (275 kW). Max speed is 30.0 knots.

The transmission is a Z-drive aka sterndrive.

Alternative 2:

Minor 31 may be equipped with an inboard engine at 370 hp (275 kW). Cruise speed is 32.0 knots.

The transmission is a shaft drive. A shaft drive will in the long run require less maintenance than other types of drive e.g. a sail drive.

The fuel tank has a capacity of 400.0 liters (105 US gallons, 87 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.

EU classification

Minor 31 holds a CE certification:

The boat is by European Union certified as Class B. OFFSHORE:

Designed for offshore voyages where conditions up to, and including, wind force 8 (Beaufort scale) and significant wave heights up to, and including, 4 m may be experienced.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Minor 31 is about 207 kg/cm, alternatively 1164 lbs/inch.
Meaning: if you load 207 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1164 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 Minor 31 is 3.03.

Compared with other similar motor boats it is more spacy than 54% of all other designs. It seems that the designer has chosen a slightly more spacy 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 categorized as a Powerboat.

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 Minor 31 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.