Review of Impala 24
Basic specs.
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The hull is made of plywood.
Note: the boat has also been sold to be self-made/-interiored, which means that the quality of each boat may vary.
The Impala 24 is equipped with a fractional rig. A fractional rig has smaller headsails which make tacking easier, which is an advantage for cruisers and racers, of course. The downside is that having the wind from behind often requires a gennaker or a spinnaker for optimal speed.
Fin keel
The Impala 24 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 enter even shallow marinas as the draft is just about 1.40 - 1.50 meter (4.59 - 4.89 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 Impala 24 is 2.38, indicating that this boat would not 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 Impala 24 is about 133 kg/cm, alternatively 749 lbs/inch.
Meaning: if you load 133 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 749 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 Impala 24 is 2.74.
The ballast ratio for Impala 24 is 49%.
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): 20.95
What is Relative Speed Performance?
The Relative Speed Performance for Impala 24 is 85
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 | 7.4 m | (24.3 feet) | 10 mm | (3/8 inch) |
| Genoa sheet | 7.4 m | (24.3 feet) | 10 mm | (3/8 inch) |
| Mainsheet | 18.5 m | (60.7 feet) | 10 mm | (3/8 inch) |
| Spinnaker sheet | 16.3 m | (53.4 feet) | 10 mm | (3/8 inch) |
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