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Review of Comet 12


Basic specs.

sail specifications
The Comet 12 is a large sailboat designed by the maritime architect Andrea Vallicelli. The Comet 12 is built by the Italian yard Comar Yachts.

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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 6 berths.


Keel

The Comet 12 has been built with different keel alternatives.

Unknown keel type

The boat can only enter major marinas as the draft is about 2.05 - 2.15 meter (6.73 - 7.03 ft) dependent on the load. See immersion rate below.

Fin keel

The Comet 12 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.

Comet 12 can only enter major marinas as the draft is about 2.10 - 2.20 meter (6.89 - 7.19 ft) dependent on the load. See immersion rate below.


Engine

The Comet 12 has been equipped with different engine alternatives.

Alternative 1:

The boat may be equipped with an inboard Nanni diesel engine at 45 hp (33 kW).

Alternative 2:

The boat may be equipped with an inboard diesel engine at 30 hp (22 kW).

The transmission is a saildrive.


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 Comet 12 is 2.01, 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 Comet 12 is about 313 kg/cm, alternatively 1755 lbs/inch.
Meaning: if you load 313 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1755 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 Comet 12 is 3.08.

Slim Wide 73% 0 50 100
Compared with other similar sailboats it is more spacy than 73% of all other designs. It seems that the designer has chosen a slightly more spacy hull design.


SA/D (Sail Area Displacement ratio)

SA/D (Sail Area Displacement ratio)
Indicates how fast the boat is in light wind:
- Cruising Boats have ratios 10-15
- Cruiser-Racers have ratios 16-20
- Racers have ratios above 20
- High-Performance Racers have ratios above 24
Sail-area/displacement ratio (SA/D ratio): 25.47


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
UsageLengthDiameter
Jib sheet 12.0 m(39.4 feet)14 mm(0.55 inch)
Genoa sheet12.0 m(39.4 feet)14 mm(0.55 inch)
Mainsheet 30.0 m(98.4 feet)14 mm(0.55 inch)
Spinnaker sheet26.4 m(86.6 feet)14 mm(0.55 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

We are always looking for new photos. If you can contribute with photos for Comet 12 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