Review of ÅH-30

ÅH-30 anno 1980. Båten byggdes på Lennart Ågren båtbyggeri i Kalmar 1980, och bilden är från sommaren 2002 i Visby hamn.

Basic specs.

The ÅH-30 is a sailboat designed by the maritime architect Lennart Ågren.

Looking for a new boat? Find a ÅH-30 or similar boat for sale

Rig

The boat equipped with a masthead rig. The advantage of a masthead rig is its simplicity and the fact that a given sail area - compared with a fractional rig - can be carried lower and thus with less heeling moment.

Keel

The keel is made of lead. Compared with iron, lead has the advantage of being 44% heavier, which allows a smaller keel and hence less water resistance and higher speed.

The boat can enter most marinas as the draft is just about 1.60 - 1.70 meter (5.25 - 5.55 ft) dependent on 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.

Stability and Safety

What is Capsize Screening Formula (CSF)?

The capsize screening value for ÅH-30 is 2.05, indicating that this boat would not be accepted to participate in ocean races.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for ÅH-30 is about 182 kg/cm, alternatively 1021 lbs/inch.
Meaning: if you load 182 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1021 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 ÅH-30 is 3.11.

Compared with other similar sailboats it is more spacy than 50% of all other designs. It seems that the designer has chosen an average hull design.

Ballast Ratio

What is a Ballast Ratio?

The ballast ratio for ÅH-30 is 39%.

This ballast ratio shows a righting moment that is higher than 38% of all similar sailboat designs. A righting moment (ability to resist heeling) just below average.

SA/D (Sail Area Displacement ratio)

What is SA/D (Sail Area Displacement ratio)?

The SA/D for ÅH-30 with ISO 8666 reference sail is 15.9, with a 135% genua the SA/D is 19.1.

The SA/D ratio indicates that it is faster than 46% of all similar sailboat designs in light wind.

Over- / underrigged

The ÅH-30 has more rig than 76% of all similar sailboats, which indicates that the boat is significantly overrigged.

RSP (Relative Speed Performance)

What is Relative Speed Performance?

The Relative Speed Performance for ÅH-30 is 31

The relative speed performance is 31 which means that a it is faster than 31% of all similar sailboat designs.

Maintenance

Rig

Dimensions of sail for masthead rig.

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
Mainsail halyard	25.6 m	(83.8 feet)	10 mm	(3/8 inch)
Jib/genoa halyard	25.6 m	(83.8 feet)	10 mm	(3/8 inch)
Spinnaker halyard	25.6 m	(83.8 feet)	10 mm	(3/8 inch)
Jib sheet	9.2 m	(30.2 feet)	12 mm	(1/2 inch)
Genoa sheet	9.2 m	(30.2 feet)	12 mm	(1/2 inch)
Mainsheet	23.0 m	(75.5 feet)	12 mm	(1/2 inch)
Spinnaker sheet	20.2 m	(66.4 feet)	12 mm	(1/2 inch)
Cunningham	2.9 m	(9.5 feet)	10 mm	(3/8 inch)
Kickingstrap	5.8 m	(19.0 feet)	10 mm	(3/8 inch)
Clew-outhaul	5.8 m	(19.0 feet)	10 mm	(3/8 inch)

Boat owner's ideas

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

Do you have changes/improvements you would like to share? Upload a photo and describe what to look for.

Finally

We are always looking for new photos. If you can contribute with photos for ÅH-30 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.