Review of Shark 50

Basic specs.

The Shark 50 is a large sailboat designed by the French maritime architect Guy Ribadeau-Dumas. The Shark 50 is built by Nautalu.

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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 2.20 - 2.30 meter (7.22 - 7.52 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.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Shark 50 is about 400 kg/cm, alternatively 2242 lbs/inch.
Meaning: if you load 400 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 2242 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 Shark 50 is 4.10.

Compared with other similar sailboats it is slimmer than 96% of all other designs. It seems that the designer has chosen a significantly more speedy hull design. This type of design is also referred to as 'needle'.

Ballast Ratio

What is a Ballast Ratio?

The ballast ratio for Shark 50 is 31%.

This ballast ratio shows a righting moment that is higher than 24% of all similar sailboat designs. A righting moment (ability to resist heeling) significantly below average.

Over- / underrigged

Maintenance

Rig

Dimensions of sail.

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	39.2 m	(128.5 feet)	14 mm	(0.55 inch)
Jib/genoa halyard	39.2 m	(128.5 feet)	14 mm	(0.55 inch)
Spinnaker halyard	39.2 m	(128.5 feet)	14 mm	(0.55 inch)
Jib sheet	15.7 m	(51.3 feet)	16 mm	(5/8 inch)
Genoa sheet	15.7 m	(51.3 feet)	16 mm	(5/8 inch)
Mainsheet	39.1 m	(128.4 feet)	16 mm	(5/8 inch)
Spinnaker sheet	34.4 m	(113.0 feet)	16 mm	(5/8 inch)
Cunningham	5.8 m	(19.0 feet)	14 mm	(0.55 inch)
Kickingstrap	11.6 m	(38.0 feet)	14 mm	(0.55 inch)
Clew-outhaul	11.6 m	(38.0 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.

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Finally

We are always looking for new photos. If you can contribute with photos for Shark 50 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.