Review of Petrel 12 (Rhodes)

Basic specs.

The Petrel 12 (Rhodes) is a small sailing dinghy designed by the maritime architect Rhodes in the mid sixties. A few thousand boats have been produced. The Petrel 12 (Rhodes) is built by the American yard Pearson Yachts.

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Hull

The hull is made of aluminium. Aluminum is strong and forgiving. Where an impact on a fiberglass hull will result in major gelcoat damage and possible cracking, an aluminum hull will probably only have a scratch or a small bend. The only concern is electrolysis. Ensure that you have proper sacrificial anodes installed.

Rig

The Petrel 12 (Rhodes) is equipped with a fractional rig. A fractional rig has smaller headsails which make tacking easier, which is an advantage for cruisers and racers, of course. The downside is that having the wind from behind often requires a gennaker or a spinnaker for optimal speed.

Keel

CentreBoard

The Petrel 12 (Rhodes) is equipped with a centreboard keel. A centreboard keel is a pivoting lifting keel, allowing to sail both coastal and inland waters.

The boat can sail close to the beach as the draft is just 0.10 - 0.20 meter (0.33 - 0.63 ft) dependent of the load. See immersion rate below.

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 Petrel 12 (Rhodes) is about 37 kg/cm, alternatively 208 lbs/inch.
Meaning: if you load 37 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 208 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 Petrel 12 (Rhodes) is 2.41.

Compared with other similar dinghies it is more spacy than 62% of all other designs. It seems that the designer has chosen a slightly more spacy hull design.

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

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References

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