Review of Dinghy 12' P S.I.

Basic specs.

The Dinghy 12' P S.I. is a small dinghy designed by the maritime architect G. Cockshott.

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Hull

The hull is made of plywood.

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 Dinghy 12' P S.I. is about 34 kg/cm, alternatively 194 lbs/inch.
Meaning: if you load 34 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 194 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 Dinghy 12' P S.I. is 2.58.

Compared with other similar dinghies it is slimmer than 58% of all other designs. It seems that the designer has chosen a slightly more speedy hull design.

Maintenance

Boat owner's ideas

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

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Finally

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References

[Ref 1]: ISO 8666 Small craft — Principal data.
[Ref 3]: ISO 12215-5 Small craft — Hull construction and scantlings.