Review of Irwin 34

Basic specs.

The Irwin 34 is a sailboat designed in the mid seventies. The Irwin 34 is built by the American yard Irwin Yacht & Marine Corp..

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Hull

The hull is made of fibreglass. A hull made of fibreglass requires only a minimum of maintenance during the sailing season.

Keel

Fin keel

The Irwin 34 is built with a fin keel. The fin keel is the most common keel and provides splendid manoeuvrability. The downside is that it has less directional stability than a long keel.

The boat can enter most marinas as the draft is just about 1.62 - 1.72 meter (5.31 - 5.61 ft) dependent on the load.

Engine

The boat may be equipped with an inboard Yanmar diesel engine

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.

Sorry, we have no sailing characteristics available for this boat.

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.

Ballast Ratio

What is a Ballast Ratio?

The ballast ratio for Irwin 34 is 39%.

This ballast ratio is higher than 42% of all similar sailboat designs. Since the ballast ratio and the righting moment (i.e. better ability to resist heeling) is strongly correlated, a ballast ratio just below average indicates an ability to resist heeling below average.

Maintenance

Rig

Dimensions of sail.

Are your sails worn out? You might find your next sail here: Sails for Sale

If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.

**Guiding dimensions of running rig**
Usage	Length		Diameter
Jib sheet	10.4 m	(34.0 feet)	12 mm	(1/2 inch)
Genoa sheet	10.4 m	(34.0 feet)	12 mm	(1/2 inch)
Mainsheet	25.9 m	(85.0 feet)	12 mm	(1/2 inch)
Spinnaker sheet	22.8 m	(74.8 feet)	12 mm	(1/2 inch)

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 Irwin 34 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.