Review of Långedrag 501
Basic specs.
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Some boats has a hull made of Aluminium.
The boat is equipped with 4 berths.
The boat has more than one rig.
One option is a ketch rig. A ketch rig is generally considered easier to handle, because the sails are smaller, and because it can sail on most points to the wind with one sail completely taken down for repair or while reefing. The sail configuration of a ketch allows for better comfort and stability when sailing downwind or on a broad reach.
Another option is a masthead rig. The advantage of a masthead rig is its simplicity and the fact that a given sail area - compared with a fractional rig - can be carried lower and thus with less heeling moment.
Unknown keel type
The keel is made of lead. Compared with iron, lead has the advantage of being 44% heavier, which allows a smaller keel and hence less water resistance and higher speed.
Långedrag 501 may be equipped with an engine at 90 hp (67 kW)..
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 Långedrag 501 is 1.67, 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 Långedrag 501 is about 474 kg/cm, alternatively 2658 lbs/inch.
Meaning: if you load 474 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 2658 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 Långedrag 501 is 3.28.
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): 16.06
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.
| Masthead rig | ||||
| Usage | Length | Diameter | ||
| Jib sheet | 15.2 m | (50.0 feet) | 16 mm | (5/8 inch) |
| Genoa sheet | 15.2 m | (50.0 feet) | 16 mm | (5/8 inch) |
| Mainsheet | 38.1 m | (125.0 feet) | 16 mm | (5/8 inch) |
| Spinnaker sheet | 33.5 m | (110.0 feet) | 16 mm | (5/8 inch) |
| Ketch rig | ||||
| Usage | Length | Diameter | ||
| Jib sheet | 15.2 m | (50.0 feet) | 16 mm | (5/8 inch) |
| Genoa sheet | 15.2 m | (50.0 feet) | 16 mm | (5/8 inch) |
| Mainsheet | 38.1 m | (125.0 feet) | 16 mm | (5/8 inch) |
| Spinnaker sheet | 33.5 m | (110.0 feet) | 16 mm | (5/8 inch) |
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