Review of Asso 99

Basic specs.

sail specifications
The Asso 99 is a sailboat designed by the Italian maritime architect Ettore Santarelli in the early eighties. A few hundred boats have been produced.

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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.


The boat equipped 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 genaker or a spinnaker for optimal speed.


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 Asso 99 is 2.87, 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 Asso 99 is about 196 kg/cm, alternatively 1098 lbs/inch.
Meaning: if you load 196 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1098 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 Asso 99 is 3.39.

Wide Slim 66% 0 50 100
Compared with other similar sailboats it is slimmer than 66% of all other designs. It seems that the designer has chosen a slightly more speedy hull design.

SA/D (Sail Area Displacement ratio)

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

The SA/D for Asso 99 with ISO 8666 reference sail is 39.8, with a 135% genua the SA/D is 45.9.

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



Dimensions of sail for fractional rig.

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
Mainsail halyard 29.4 m(96.5 feet)10 mm(3/8 inch)
Jib/genoa halyard29.4 m(96.5 feet)10 mm(3/8 inch)
Spinnaker halyard29.4 m(96.5 feet)10 mm(3/8 inch)
Jib sheet 10.0 m(32.7 feet)12 mm(1/2 inch)
Genoa sheet10.0 m(32.7 feet)12 mm(1/2 inch)
Mainsheet 24.9 m(81.7 feet)12 mm(1/2 inch)
Spinnaker sheet21.9 m(71.9 feet)12 mm(1/2 inch)
Cunningham4.2 m(13.6 feet)10 mm(3/8 inch)
Kickingstrap8.3 m(27.2 feet)10 mm(3/8 inch)
Clew-outhaul8.3 m(27.2 feet)10 mm(3/8 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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