Review of Princess 56

Basic specs.

The Princess 56 is a large motorboat designed in the mid nineties. The Princess 56 is built by the British yard Marine Projects (Plymouth) Limited.

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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 a galley, 755.0 liter fresh water capacity and toilet facility.

Engine

The Princess 56 has been equipped with different engine alternatives.

Alternative 1:

The boat may be equipped with dual inboard Volvo Penta TAMD 122P diesel engines at 610 hp (454 kW). Max speed is 34.0 knots.

Alternative 2:

Princess 56 may be equipped with dual inboard Volvo Penta D12/700 diesel engines at 700 hp (521 kW). Max speed is 34.0 knots.

Alternative 3:

The boat may be equipped with dual inboard Caterpillar 3196 TA diesel engines at 660 hp (491 kW). Max speed is 34.0 knots.

The fuel tank has a capacity of 2182.0 liters (576 US gallons, 479 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 Princess 56 is about 530 kg/cm, alternatively 2972 lbs/inch.
Meaning: if you load 530 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 2972 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 Princess 56 is 3.67.

Compared with other similar motor boats it is slimmer than 69% of all other designs. It seems that the designer has chosen a slightly 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:

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.

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 Princess 56 (1995) 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.