Review of Allegro 39
Basic specs.
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The interior is like many other boats made of mahogany. Mahogany belongs to the hardwood species, known for being water-repellent and resistant to decay. It has an attractive wood grain and holds wood polish and varnish well.
The boat is equipped with 8 berths.
Note: the boat has also been sold to be self-made/-interiored, which means that the quality of each boat may vary.
The Allegro 39 is equipped with a ketch rig. A ketch rig is generally considered easier to handle, because the sails are smaller, and because it can sail on most points to the wind with one sail completely taken down for repair or while reefing. The sail configuration of a ketch allows for better comfort and stability when sailing downwind or on a broad reach.
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 Allegro 39 is 1.91, 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 Allegro 39 is about 320 kg/cm, alternatively 1794 lbs/inch.
Meaning: if you load 320 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 1794 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 Allegro 39 is 3.01.
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): 20.54
Maintenance
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 | 12.0 m | (39.3 feet) | 14 mm | (0.55 inch) |
| Genoa sheet | 12.0 m | (39.3 feet) | 14 mm | (0.55 inch) |
| Mainsheet | 30.0 m | (98.3 feet) | 14 mm | (0.55 inch) |
| Spinnaker sheet | 26.4 m | (86.5 feet) | 14 mm | (0.55 inch) |
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