YachtDatabase.com

Review of Armstrong 7.50


Basic specs.

sail specifications
The Armstrong 7.50 is a motorboat.

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Interior

The boat is equipped with 2+1 berths and 120.0 liter fresh water capacity.


Engine

The boat is typically equipped with an inboard Volkswagen diesel engine at 80.0 hp (59 kW).

The fuel tank has a capacity of 270.0 liters (71 US gallons, 59 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 Armstrong 7.50 is about 134 kg/cm, alternatively 750 lbs/inch.
Meaning: if you load 134 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 750 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 Armstrong 7.50 is 3.20.

Wide Slim 86% 0 50 100
Compared with other similar motor boats it is slimmer than 86% of all other designs. It seems that the designer has chosen a significantly more speedy 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:

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 67 kW (89 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 Armstrong 7.50 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