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Review of Signet 20


Signet 20
Signet 20 anno 1971. Signet 20 mini havkrydser af Ray Kaufmann Fra Sparkmann-Stephens USA

Basic specs.

sail specifications
The Signet 20 is a small sailboat designed by the maritime architect Ray Kaufmann.

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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. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all.


Interior

The boat is equipped with 4 berths and a galley.


Keel
Keel
Keel of Signet 20 anno 1971. Signet 20 mini havkrydser af Ray Kaufmann Fra Sparkmann-Stephens USA

Fin keel

The Signet 20 is equipped with a fin keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a full 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 even shallow marinas as the draft is just about 0.91 - 1.01 meter (2.99 - 3.29 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.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Signet 20 is about 82 kg/cm, alternatively 460 lbs/inch.
Meaning: if you load 82 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 460 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 Signet 20 is 2.98.

Wide Slim 79% 0 50 100
Compared with other similar sailboats it is slimmer than 79% of all other designs. It seems that the designer has chosen a significantly more speedy hull design.


Ballast Ratio

What is a Ballast Ratio?

The ballast ratio for Signet 20 is 37%.

Low High 50% 0 50 100
This ballast ratio shows a righting moment that is higher than 50% of all similar sailboat designs. This righting moment (ability to resist heeling) is spot on average!


Over- / underrigged

Low High 76% 0 50 100
The Signet 20 has more rig than 76% of all similar sailboats, which indicates that the boat is significantly overrigged.


Maintenance

Rig

Dimensions of sail.

mainsail specifications headsail specifications

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
UsageLengthDiameter
Mainsail halyard 16.9 m(55.5 feet)6 mm(1/4 inch)
Jib/genoa halyard16.9 m(55.5 feet)6 mm(1/4 inch)
Spinnaker halyard16.9 m(55.5 feet)6 mm(1/4 inch)
Jib sheet 6.0 m(19.8 feet)8 mm(5/16 inch)
Genoa sheet6.0 m(19.8 feet)8 mm(5/16 inch)
Mainsheet 15.1 m(49.5 feet)8 mm(5/16 inch)
Spinnaker sheet13.3 m(43.6 feet)8 mm(5/16 inch)
Cunningham2.7 m(8.8 feet)6 mm(1/4 inch)
Kickingstrap5.4 m(17.6 feet)6 mm(1/4 inch)
Clew-outhaul5.4 m(17.6 feet)6 mm(1/4 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.

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



Finally

We are always looking for new photos. If you can contribute with photos for Signet 20 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