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Review of Swan 76


Basic specs.

sail specifications
The Swan 76 is a large sailboat designed by the American maritime architect bureau Sparkman & Stephens in the late seventies. Only a few boats have been produced. The Swan 76 is built by the Finnish yard OY Nautor AB.

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Hull

The hull is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season.


Interior

The boat is equipped with 0 cabins and toilet facility.


Keel

Fin keel

The Swan 76 is equipped with a fin keel. The fin keel is the most common keel and provides splendid manoeuvrability. The downside is that it has less directional stability than a long keel.

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.

The boat can only enter major marinas as the draft is about 3.66 - 3.76 meter (12.01 - 12.31 ft) dependent on the load. See immersion rate below.


Engine

Swan 76 may be equipped with an inboard Mercedes-Benz OM 402 diesel engine at 200 hp (149 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 Swan 76 is 1.63, 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 Swan 76 is about 905 kg/cm, alternatively 5070 lbs/inch.
Meaning: if you load 905 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 5070 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 Swan 76 is 4.02.


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): 23.36


Sorry, we do not have sufficient statistical information available for this boat to provide a significant reliable analysis.

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
UsageLengthDiameter
Jib sheet 23.3 m(76.4 feet)16 mm(5/8 inch)
Genoa sheet23.3 m(76.4 feet)16 mm(5/8 inch)
Mainsheet 58.2 m(191.1 feet)16 mm(5/8 inch)
Spinnaker sheet51.3 m(168.2 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 Swan 76 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