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Review of Formula 402 SR 1


Basic specs.

sail specifications
The Formula 402 SR 1 is a large motorboat. The Formula 402 SR 1 is built by the American yard Thunderbird.

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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.


Interior

The boat is equipped with 2 berths.


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 Formula 402 SR 1 is about 232 kg/cm, alternatively 1304 lbs/inch.
Meaning: if you load 232 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1304 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 Formula 402 SR 1 is 4.31.

Wide Slim 99% 0 50 100
Compared with other similar motor boats it is slimmer than 99% of all other designs. It seems that the designer has chosen a significantly more speedy hull design. This type of design is also referred to as 'needle'.


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:

Equation for Danish definition of a powerboat
Danish definition of a powerboat
According to this definition this boat is not categorized as a Powerboat.
Though, if you install a motor of 152 kW (204 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 Formula 402 SR 1 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