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Review of Crescent 470 Lången


Basic specs.

sail specifications
The Crescent 470 Lången is a small motorboat. The Crescent 470 Lången is built by the Swedish yard Cremo Produktions AB.

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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. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all.

Interior
The boat is equipped with a galley.

Keel

The boat can sail close to the beach as the draft is just 0.30 - 0.40 meter (0.98 - 1.28 ft) dependent of the load. See immersion rate below.


Engine

Crescent 470 Lången is typically equipped with an outboard engine at 6.0 hp (4 kW).


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 Crescent 470 Lången is about 54 kg/cm, alternatively 303 lbs/inch.
Meaning: if you load 54 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 303 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 Crescent 470 Lången is 2.80.

Wide Slim 96% 0 50 100
Compared with other similar motor boats it is slimmer than 96% 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 25 kW (34 hp), then the boat will become a powerboat, and you will need a Danish 'powerboat driving license'


Maintenance

Boat owner's ideas

This section shown boat owner's changes, improvements, etc. Here you might find inspiration for your boat.

Do you have changes/improvements you would like to share? Upload a photo and describe what to look for.



Finally

We are always looking for new photos. If you can contribute with photos for Crescent 470 Lången 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