Review of Allmand 23
Basic specs.
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The hull is made of fibreglass. A hull made of fibreglass requires only a minimum of maintenance during the sailing season. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all.
The Allmand 23 is built with a cutter rig. A cutter rig breaks the yacht’s sail area down into smaller, easier to manage sails. Cutter rigs are often used for offshore sailing.
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 Allmand 23 is 2.54, indicating that this boat would not 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 6.0 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 Allmand 23 is about 117 kg/cm, alternatively 657 lbs/inch.
Meaning: if you load 117 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 657 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 Allmand 23 is 12.3.
What is L/B (Length Beam Ratio)?
The l/b ratio for Allmand 23 is 2.42.
What is Displacement Length Ratio?
The DL-ratio for Allmand 23 is 192 which categorizes this boat among 'light racers'.
What is SA/D (Sail Area Displacement ratio)?
The SA/D for Allmand 23 with ISO 8666 reference sail is 15.1, with a 135% genua the SA/D is 18.2.
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 | 16.6 m | (54.3 feet) | 8 mm | (5/16 inch) |
| Jib/genoa halyard | 16.6 m | (54.3 feet) | 8 mm | (5/16 inch) |
| Spinnaker halyard | 16.6 m | (54.3 feet) | 8 mm | (5/16 inch) |
| Jib sheet | 7.0 m | (23.0 feet) | 10 mm | (3/8 inch) |
| Genoa sheet | 7.0 m | (23.0 feet) | 10 mm | (3/8 inch) |
| Mainsheet | 17.5 m | (57.5 feet) | 10 mm | (3/8 inch) |
| Spinnaker sheet | 15.4 m | (50.6 feet) | 10 mm | (3/8 inch) |
| Cunningham | 2.7 m | (8.8 feet) | 8 mm | (5/16 inch) |
| Kickingstrap | 5.3 m | (17.5 feet) | 8 mm | (5/16 inch) |
| Clew-outhaul | 5.3 m | (17.5 feet) | 8 mm | (5/16 inch) |
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