Review of Arcona 465

Basic specs.

The Arcona 465 is a sailboat designed by the Swedish maritime architect Stefan Qviberg in the mid 2010.

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Rig

The boat equipped with a fractional rig. A fractional rig has smaller headsails which make tacking easier, which is an advantage for cruisers and racers, of course. The downside is that having the wind from behind often requires a genaker or a spinnaker for optimal speed.

Keel

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 Arcona 465 is 2.02, indicating that this boat would not 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 8.8 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 Arcona 465 is about 377 kg/cm, alternatively 2112 lbs/inch.
Meaning: if you load 377 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 2112 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 Arcona 465 is 21.6.

Comparing this ratio with similar sailboats show that it is more comfortable than 10% of all similar sailboat designs. This is a comfort value significantly below average.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Arcona 465 is 3.41.

Compared with other similar sailboats it is more spacy than 54% of all other designs. It seems that the designer has chosen a slightly more spacy hull design.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Arcona 465 is 114 which categorizes this boat among 'ultra light racers'.

90% 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 Arcona 465 with ISO 8666 reference sail is 26.0, with a 135% genua the SA/D is 30.2.

The SA/D ratio indicates that it is faster than 100% of all similar sailboat designs in light wind.

Maintenance

Rig

Dimensions of sail for fractional 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	47.5 m	(156.0 feet)	14 mm	(0.55 inch)
Jib/genoa halyard	47.5 m	(156.0 feet)	14 mm	(0.55 inch)
Spinnaker halyard	47.5 m	(156.0 feet)	14 mm	(0.55 inch)
Jib sheet	14.5 m	(47.6 feet)	16 mm	(5/8 inch)
Genoa sheet	14.5 m	(47.6 feet)	16 mm	(5/8 inch)
Mainsheet	36.2 m	(118.9 feet)	16 mm	(5/8 inch)
Spinnaker sheet	31.9 m	(104.7 feet)	16 mm	(5/8 inch)
Cunningham	6.7 m	(22.1 feet)	14 mm	(0.55 inch)
Kickingstrap	13.5 m	(44.2 feet)	14 mm	(0.55 inch)
Clew-outhaul	13.5 m	(44.2 feet)	14 mm	(0.55 inch)

Boat owner's ideas

This section shown boat owner's changes, improvements, etc. Here you might find inspiration for your boat.

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

Finally

We are always looking for new photos. If you can contribute with photos for Arcona 465 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.