Review of AM 42 Hard Top

Basic specs.

sail specifications
The AM 42 Hard Top is a large motorboat. The AM 42 Hard Top is built by the Italian yard Arredomar.

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The boat is equipped with 2 cabins, 4 berths, 400.0 liter fresh water capacity and toilet facility.

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 AM 42 Hard Top is about 347 kg/cm, alternatively 1946 lbs/inch.
Meaning: if you load 347 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1946 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 AM 42 Hard Top is 3.41.

Wide Slim 58% 0 50 100
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.



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 179 kW (241 hp), then the boat will become a powerboat, and you will need a Danish 'powerboat driving license'


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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