Review of Menai Srait One Design

Basic specs.

The Menai Srait One Design also known as Menai Srait OD is a small sailboat designed by the maritime architect W. H. Rowland in the late thirties. Only a few boats have been produced.

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Hull

The hull is made of wood.

Rig

The Menai Srait One Design is built 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 Menai Srait One Design is built with a centreboard keel. A centreboard keel is a pivoting lifting keel, allowing to sail both coastal and inland waters.

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 Menai Srait One Design is 2.43, 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 Menai Srait One Design is about 78 kg/cm, alternatively 437 lbs/inch.
Meaning: if you load 78 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 437 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 Menai Srait One Design is 3.19.

Compared with other similar sailboats it is slimmer than 93% of all other designs. It seems that the designer has chosen a significantly more speedy hull design. This type of design is also referred to as 'needle'.

Maintenance

Rig

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	6.1 m	(20.0 feet)	8 mm	(5/16 inch)
Genoa sheet	6.1 m	(20.0 feet)	8 mm	(5/16 inch)
Mainsheet	15.2 m	(50.0 feet)	8 mm	(5/16 inch)
Spinnaker sheet	13.4 m	(44.0 feet)	8 mm	(5/16 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

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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.