Review of Swan 53 Mk II

Basic specs.

The Swan 53 Mk II is a large sailboat designed by the Argentine maritime architect Germán Frers in the mid 2000. Only a few boats have been produced.

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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 685.0 liter fresh water capacity.

Rig

The Swan 53 Mk II is equipped with 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

Fin keel

The Swan 53 Mk II 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 boat can only enter major marinas as the draft is about 2.44 - 2.54 meter (8.01 - 8.31 ft) dependent on the load. See immersion rate below.

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 53 Mk II is 1.71, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.

Theoretical Maximum Hull Speed

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 9.2 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.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Swan 53 Mk II is about 458 kg/cm, alternatively 2566 lbs/inch.
Meaning: if you load 458 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 2566 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.

Motion Comfort Ratio

What is Motion Comfort Ratio (MCR)?

The Motion Comfort Ratio for Swan 53 Mk II is 38.9.

Comparing this ratio with similar sailboats show that it is more comfortable than 73% of all similar sailboat designs. This comfort value is just above average.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Swan 53 Mk II is 3.47.

Compared with other similar sailboats it is more spacy than 66% of all other designs. It seems that the designer has chosen a slightly more spacy hull design.

Ballast Ratio

What is a Ballast Ratio?

The ballast ratio for Swan 53 Mk II is 37%.

This ballast ratio shows a righting moment that is higher than 54% of all similar sailboat designs. A righting moment (ability to resist heeling) just above average.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Swan 53 Mk II is 205 which categorizes this boat among 'light crusers & offshore racers'.

54% of all similar sailboat designs are categorized as heavier. A light displacement requires less sailarea and has higher accellerations.

SA/D (Sail Area Displacement ratio)

What is SA/D (Sail Area Displacement ratio)?

The SA/D for Swan 53 Mk II with ISO 8666 reference sail is 17.2, with a 135% genua the SA/D is 20.1.

The SA/D ratio indicates that it is faster than 46% of all similar sailboat designs in light wind.

Over- / underrigged

Maintenance

Bottom Paint

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 78m² (839 ft²).
Based on this, your favourite maritime shop can tell you the quantity you need.

Note: If you use a paint roller you will need more paint than if you use a paintbrush.

Rig

Dimensions of sail for masthead rig.

Are your sails worn out? You might find your next sail here: Sails for Sale

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**
Usage	Length		Diameter
Mainsail halyard	51.5 m	(169.0 feet)	14 mm	(0.55 inch)
Jib/genoa halyard	51.5 m	(169.0 feet)	14 mm	(0.55 inch)
Spinnaker halyard	51.5 m	(169.0 feet)	14 mm	(0.55 inch)
Jib sheet	16.5 m	(54.1 feet)	16 mm	(5/8 inch)
Genoa sheet	16.5 m	(54.1 feet)	16 mm	(5/8 inch)
Mainsheet	41.2 m	(135.2 feet)	16 mm	(5/8 inch)
Spinnaker sheet	36.3 m	(119.0 feet)	16 mm	(5/8 inch)
Cunningham	6.7 m	(22.0 feet)	14 mm	(0.55 inch)
Kickingstrap	13.4 m	(44.0 feet)	14 mm	(0.55 inch)
Clew-outhaul	13.4 m	(44.0 feet)	14 mm	(0.55 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.

Do you have changes/improvements you would like to share? Upload a photo and describe what you have done.

Finally

We are always looking for new photos. If you can contribute with photos for Swan 53 Mk II 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

[Ref 1]: ISO 8666 Small craft — Principal data.
[Ref 3]: ISO 12215-5 Small craft — Hull construction and scantlings.