Review of Mirage 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.
The boat is equipped with 284.0 liter fresh water capacity.
The Mirage 39 is equipped with a masthead rig. The advantage of a masthead rig is its simplicity and the fact that a given sail area - compared with a fractional rig - can be carried lower and thus with less heeling moment.
Fin keel
The Mirage 39 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 boat can only enter major marinas as the draft is about 1.88 - 1.98 meter (6.17 - 6.47 ft) dependent on the load. See immersion rate below.
Mirage 39 may be equipped with an inboard Volvo Penta diesel engine at 27 hp (20 kW). Calculated max speed is about 5.5 knots
The fuel tank has a capacity of 151.0 liters (39 US gallons, 33 imperial gallons).
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 Mirage 39 is 1.98, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.
What is Theoretical Maximum Hull Speed?
The theoretical maximal speed of a displacement boat of this length is 7.7 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.
The immersion rate is defined as the weight required to sink the boat a certain level.
The immersion rate for Mirage 39 is about 255 kg/cm, alternatively 1430 lbs/inch.
Meaning: if you load 255 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 1430 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 Motion Comfort Ratio (MCR)?
The Motion Comfort Ratio for Mirage 39 is 24.4.
What is L/B (Length Beam Ratio)?
The l/b ratio for Mirage 39 is 3.13.
The ballast ratio for Mirage 39 is 38%.
What is Displacement Length Ratio?
The DL-ratio for Mirage 39 is 201 which categorizes this boat among 'light crusers & offshore racers'.
Maintenance
When buying anti-fouling bottom paint, it's nice to know how much to buy.
The surface of the wet bottom is about 43m2 (462 ft2).
Based on this, your favourite maritime shop can tell you the quantity you need.
Note: If you use a paint roller you will need more paint than if you use a paintbrush.
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 | 11.9 m | (39.2 feet) | 14 mm | (0.55 inch) |
| Genoa sheet | 11.9 m | (39.2 feet) | 14 mm | (0.55 inch) |
| Mainsheet | 29.8 m | (97.9 feet) | 14 mm | (0.55 inch) |
| Spinnaker sheet | 26.3 m | (86.2 feet) | 14 mm | (0.55 inch) |
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