Review of Swan 46 Mk III
Basic specs.
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Both the hull and the deck is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season.
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 Swan 46 Mk III is 1.76, 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 8.4 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 Swan 46 Mk III is about 345 kg/cm, alternatively 1933 lbs/inch.
Meaning: if you load 345 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 1933 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 Swan 46 Mk III is 35.4.
What is L/B (Length Beam Ratio)?
The l/b ratio for Swan 46 Mk III is 3.33.
What is Displacement Length Ratio?
The DL-ratio for Swan 46 Mk III is 232 which categorizes this boat among 'light crusers & offshore racers'.
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): 18.07
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 | 14.2 m | (46.6 feet) | 16 mm | (5/8 inch) |
| Genoa sheet | 14.2 m | (46.6 feet) | 16 mm | (5/8 inch) |
| Mainsheet | 35.5 m | (116.5 feet) | 16 mm | (5/8 inch) |
| Spinnaker sheet | 31.2 m | (102.5 feet) | 16 mm | (5/8 inch) |
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