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Review of Andrews 42


Basic specs.

sail specifications
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.


Interior

The boat is equipped with 75.0 liter fresh water capacity.


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%.

Low High 88% 0 50 100
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'.

Heavy Light 58% 0 50 100
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.

Low High 86% 0 50 100
The SA/D ratio indicates that it is faster than 86% of all similar sailboat designs in light wind.


Over- / underrigged

Low High 38% 0 50 100
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.

mainsail specifications headsail specifications

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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
UsageLengthDiameter
Mainsail halyard 38.7 m(127.1 feet)12 mm(1/2 inch)
Jib/genoa halyard38.7 m(127.1 feet)12 mm(1/2 inch)
Spinnaker halyard38.7 m(127.1 feet)12 mm(1/2 inch)
Jib sheet 12.8 m(42.0 feet)14 mm(0.55 inch)
Genoa sheet12.8 m(42.0 feet)14 mm(0.55 inch)
Mainsheet 32.0 m(105.0 feet)14 mm(0.55 inch)
Spinnaker sheet28.2 m(92.4 feet)14 mm(0.55 inch)
Cunningham4.7 m(15.3 feet)12 mm(1/2 inch)
Kickingstrap9.3 m(30.6 feet)12 mm(1/2 inch)
Clew-outhaul9.3 m(30.6 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

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References