Review of Buchanan 47
Basic specs.
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The boat is equipped with 7 berths, 850.0 liter fresh water capacity and toilet facility.
Full keel
The Buchanan 47 is equipped with a long keel. A full keel provide a better directional stability than a similar boat with a fin keel; on the other hand, better directional stability means also that the boat is more difficult to handle in a harbour with less space.
The boat can only enter major marinas as the draft is about 2.10 - 2.20 meter (6.89 - 7.19 ft) dependent on the load. See immersion rate below.
Buchanan 47 is typically equipped with an inboard Perkins M130C diesel engine at 127 hp (94 kW). The speed is 6.0 knots.
The fuel tank has a capacity of 500.0 liters (132 US gallons, 109 imperial gallons).
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 Buchanan 47 is 1.42, 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 Buchanan 47 is about 354 kg/cm, alternatively 1985 lbs/inch.
Meaning: if you load 354 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 1985 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 Buchanan 47 is 3.86.
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 | 14.3 m | (46.9 feet) | 16 mm | (5/8 inch) |
| Genoa sheet | 14.3 m | (46.9 feet) | 16 mm | (5/8 inch) |
| Mainsheet | 35.8 m | (117.3 feet) | 16 mm | (5/8 inch) |
| Spinnaker sheet | 31.5 m | (103.2 feet) | 16 mm | (5/8 inch) |
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