An outboard motor is often used on this boat. In that case the boat will typically require a power of 1 - 2 hp, alternatively 25 - 31 lbs thrust if you prefer an electrical motor. Electric outboards are becoming popular for sailboat owners who want clean instant power with less noise and no exhaust fumes.
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 Silhouette Mk III is 2.41, 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 5.0 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 Silhouette Mk III is about 57 kg/cm, alternatively 320 lbs/inch.
Meaning: if you load 57 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 320 lbs cargo on the boat it will sink 1 inch.
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 Silhouette Mk III is 10.8.
What is L/B (Length Beam Ratio)?
The l/b ratio for Silhouette Mk III is 2.63.
What is Displacement Length Ratio?
The DL-ratio for Silhouette Mk III is 209 which categorizes this boat among 'light crusers & offshore racers'.
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 | 5.3 m | (17.3 feet) | 8 mm | (5/16 inch) |
Genoa sheet | 5.3 m | (17.3 feet) | 8 mm | (5/16 inch) |
Mainsheet | 13.1 m | (43.1 feet) | 8 mm | (5/16 inch) |
Spinnaker sheet | 11.6 m | (38.0 feet) | 8 mm | (5/16 inch) |
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