Review of Monark 585 Half-Cabin

Basic specs.

The Monark 585 Half-Cabin is a small motorboat designed by the Swedish maritime architect Pelle Petterson in the early eighties.

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Interior

The boat is equipped with 4 - 5 berths and a galley.

Engine

The boat may be equipped with an engine at 80 hp (59 kW). The speed is 30.0 knots..

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 Monark 585 Half-Cabin is about 96 kg/cm, alternatively 539 lbs/inch.
Meaning: if you load 96 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 539 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 Monark 585 Half-Cabin is 2.38.

Compared with other similar motor boats it is more spacy than 86% 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 Monark 585 Half-Cabin 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.