Review of Ericson 39
Basic specs.
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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.
Fin keel
The Ericson 39 is equipped with a fin keel. The fin keel is the most common keel and provides splendid manoeuvrability. The downside is that it has less directional stability than a long keel.
The boat can only enter major marinas as the draft is about 1.80 - 1.90 meter (5.91 - 6.21 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.
What is Capsize Screening Formula (CSF)?
The capsize screening value for Ericson 39 is 1.71, 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 Ericson 39 is about 277 kg/cm, alternatively 1552 lbs/inch.
Meaning: if you load 277 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 1552 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.
What is L/B (Length Beam Ratio)?
The l/b ratio for Ericson 39 is 3.42.
The ballast ratio for Ericson 39 is 50%.
What is SA/D (Sail Area Displacement ratio)?
The SA/D for Ericson 39 with ISO 8666 reference sail is 16.4, with a 135% genua the SA/D is 19.8.
Maintenance
Dimensions of sail.
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.
| Usage | Length | Diameter | ||
| Mainsail halyard | 34.8 m | (114.3 feet) | 12 mm | (1/2 inch) |
| Jib/genoa halyard | 34.8 m | (114.3 feet) | 12 mm | (1/2 inch) |
| Spinnaker halyard | 34.8 m | (114.3 feet) | 12 mm | (1/2 inch) |
| Jib sheet | 11.9 m | (39.0 feet) | 14 mm | (0.55 inch) |
| Genoa sheet | 11.9 m | (39.0 feet) | 14 mm | (0.55 inch) |
| Mainsheet | 29.7 m | (97.5 feet) | 14 mm | (0.55 inch) |
| Spinnaker sheet | 26.2 m | (85.8 feet) | 14 mm | (0.55 inch) |
| Cunningham | 4.2 m | (13.7 feet) | 12 mm | (1/2 inch) |
| Kickingstrap | 8.4 m | (27.4 feet) | 12 mm | (1/2 inch) |
| Clew-outhaul | 8.4 m | (27.4 feet) | 12 mm | (1/2 inch) |
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