The Cobra 850 has been built with more than one type of keel.
One option is a fin keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a long keel.
Another option is a bilge keel. A bilge keel is a double keel, which allows the boat to be beached. Bilge keels are the most popular keel for tidal waters.
The boat can enter even shallow marinas as the draft is just about 1.45 - 1.55 meter (4.76 - 5.06 ft) dependent on the load. See immersion rate below.
Cobra 850 is typically equipped with an inboard Bukh diesel engine.
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.
What is Capsize Screening Formula (CSF)?
The capsize screening value for Cobra 850 is 1.92, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.
The immersion rate is defined as the weight required to sink the boat a certain level.
The immersion rate for Cobra 850 is about 168 kg/cm, alternatively 943 lbs/inch.
Meaning: if you load 168 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 943 lbs cargo on the boat it will sink 1 inch.
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.
What is L/B (Length Beam Ratio)?
The l/b ratio for Cobra 850 is 2.99.
The ballast ratio for Cobra 850 is 45%.
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.
Usage | Length | Diameter | ||
Jib sheet | 8.7 m | (28.4 feet) | 10 mm | (3/8 inch) |
Genoa sheet | 8.7 m | (28.4 feet) | 10 mm | (3/8 inch) |
Mainsheet | 21.7 m | (71.1 feet) | 10 mm | (3/8 inch) |
Spinnaker sheet | 19.1 m | (62.6 feet) | 10 mm | (3/8 inch) |
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