Review of Gianetti 42 Fly

Basic specs.

The Gianetti 42 Fly is a large motorboat. The Gianetti 42 Fly is built by the Italian yard Gianetti.

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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 6 berths and 600.0 liter fresh water capacity.

Engine

The Gianetti 42 Fly has been equipped with different engine alternatives.

Alternative 1:

The boat may be equipped with dual inboard Cummins diesel engines at 840 hp (625 kW).

Alternative 2:

Gianetti 42 Fly may be equipped with an inboard Caterpillar 3208 diesel engine at 375 hp (279 kW).

The fuel tank has a capacity of 1800.0 liters (475 US gallons, 395 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 Gianetti 42 Fly is about 353 kg/cm, alternatively 1976 lbs/inch.
Meaning: if you load 353 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1976 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 Gianetti 42 Fly is 2.88.

Compared with other similar motor boats it is more spacy than 79% of all other designs. It seems that the designer has chosen a significantly 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.

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Finally

We are always looking for new photos. If you can contribute with photos for Gianetti 42 Fly 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.