Review of Andrews 42

Basic specs.

The Andrews 42 is a large sailboat designed by the American maritime architect Alan Andrews in the mid eighties.

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Hull

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

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 Andrews 42 is equipped with a centerboard keel. A centerboard keel is a pivoting lifting keel, allowing to sail both coastal and inland waters.

The boat can only enter major marinas as the draft is about 2.26 - 2.36 meter (7.41 - 7.71 ft) dependent on the load.

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.

Theoretical Maximum Hull Speed

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 7.6 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.

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 Andrews 42 is 47%.

This ballast ratio shows a righting moment that is higher than 88% of all similar sailboat designs. A righting moment (ability to resist heeling) significantly above average.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Andrews 42 is 222 which categorizes this boat among 'light crusers & offshore racers'.

58% of all similar sailboat designs are categorized as heavier. A light displacement requires less sailarea and has higher accellerations.

SA/D (Sail Area Displacement ratio)

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

The SA/D for Andrews 42 with ISO 8666 reference sail is 19.8, with a 135% genua the SA/D is 23.6.

The SA/D ratio indicates that it is faster than 86% of all similar sailboat designs in light wind.

Over- / underrigged

The Andrews 42 has more rig than 38% of all similar sailboats, which indicates that the boat is slightly underrigged.

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	38.7 m	(127.1 feet)	12 mm	(1/2 inch)
Jib/genoa halyard	38.7 m	(127.1 feet)	12 mm	(1/2 inch)
Spinnaker halyard	38.7 m	(127.1 feet)	12 mm	(1/2 inch)
Jib sheet	12.8 m	(42.0 feet)	14 mm	(0.55 inch)
Genoa sheet	12.8 m	(42.0 feet)	14 mm	(0.55 inch)
Mainsheet	32.0 m	(105.0 feet)	14 mm	(0.55 inch)
Spinnaker sheet	28.2 m	(92.4 feet)	14 mm	(0.55 inch)
Cunningham	4.7 m	(15.3 feet)	12 mm	(1/2 inch)
Kickingstrap	9.3 m	(30.6 feet)	12 mm	(1/2 inch)
Clew-outhaul	9.3 m	(30.6 feet)	12 mm	(1/2 inch)

Boat owner's ideas

This section is reserved boat owner's changes, 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.