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Review of Långedrag 501


Basic specs.

sail specifications
The Långedrag 501 is a large sailboat designed by the Swedish maritime architect Rolf Modigh.

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Hull

Some boats has a hull made of Aluminium.


Interior

The boat is equipped with 4 berths.


Rig

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.


Keel

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.


Engine

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.

Stability and Safety

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.


Immersion rate

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.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Långedrag 501 is 3.28.

Slim Wide 76% 0 50 100
Compared with other similar sailboats it is more spacy than 76% of all other designs. It seems that the designer has chosen a significantly more spacy hull design.


SA/D (Sail Area Displacement ratio)

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

Rig

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.



Guiding dimensions of running rig
Masthead rig
UsageLengthDiameter
Jib sheet 15.2 m(50.0 feet)16 mm(5/8 inch)
Genoa sheet15.2 m(50.0 feet)16 mm(5/8 inch)
Mainsheet 38.1 m(125.0 feet)16 mm(5/8 inch)
Spinnaker sheet33.5 m(110.0 feet)16 mm(5/8 inch)
Ketch rig
UsageLengthDiameter
Jib sheet 15.2 m(50.0 feet)16 mm(5/8 inch)
Genoa sheet15.2 m(50.0 feet)16 mm(5/8 inch)
Mainsheet 38.1 m(125.0 feet)16 mm(5/8 inch)
Spinnaker sheet33.5 m(110.0 feet)16 mm(5/8 inch)

Boat owner's ideas

This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.

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Finally

We are always looking for new photos. If you can contribute with photos for Långedrag 501 it would be a great help.

If you have any comments to the review, improvement suggestions, or the like, feel free to contact us. Criticism helps us to improve.



References