Review of 3B Craft T 31 Express

Basic specs.

sail specifications
The 3B Craft T 31 Express is a motorboat.

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The hull is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season.


The boat is equipped with 2+2 berths and 200.0 liter fresh water capacity.


The boat is typically equipped with dual inboard Iveco engines at 400.0 hp (298 kW).

The fuel tank has a capacity of 700.0 liters (184 US gallons, 153 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

3B Craft T 31 Express holds one 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 3B Craft T 31 Express is about 255 kg/cm, alternatively 1431 lbs/inch.
Meaning: if you load 255 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1431 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 3B Craft T 31 Express is 2.94.

Slim Wide 73% 0 50 100
Compared with other similar motor boats it is more spacy than 73% of all other designs. It seems that the designer has chosen a slightly more spacy hull design.



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:

Equation for Danish definition of a powerboat
Danish definition of a powerboat
According to this definition this boat is categorized as a Powerboat.


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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