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Review of Sunwind 33


Basic specs.

sail specifications
The Sunwind 33 is a sailboat designed by the Swedish maritime architect Tord Arne Sundén in the early eighties. Only a few boats have been produced. The Sunwind 33 is built by the Finnish yard Oy Nykra 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.
The hull is a double hull which improves the indoor climate. Especially when the water is colder than the air in the cabin, then the double hull insulates against cold water and reduce the condense water in the cabin.

Interior
The interior is like many other boats made of mahogany.
The boat is equipped with 6 berths, a galley, toilet facility and 50.0 liter waste water capacity.

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

The boat can only enter major marinas as the draft is about 1.87 - 1.97 meter (6.14 - 6.44 ft) dependent on the load. See immersion rate below.


Engine

Sunwind 33 is typically equipped with an inboard Volvo Penta 2002 diesel engine at 18.0 hp (13 kW).

The fuel tank has a capacity of 70.0 liters (18 US gallons, 15 imperial gallons).


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 Sunwind 33 is 2.23, indicating that this boat would not 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 Sunwind 33 is about 227 kg/cm, alternatively 1275 lbs/inch.
Meaning: if you load 227 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1275 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 Sunwind 33 is 2.96.

Slim Wide 73% 0 50 100
Compared with other similar sailboats it is more spacy than 73% of all other designs. It seems that the designer has chosen a slightly more spacy hull design.


RSP (Relative Speed Performance)

What is Relative Speed Performance?

The Relative Speed Performance for Sunwind 33 is 82

Slow Fast 82% 0 50 100
The relative speed performance is 82 which means that a it is faster than 82% of all similar sailboat designs.


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 10.0 m(32.9 feet)12 mm(1/2 inch)
Genoa sheet10.0 m(32.9 feet)12 mm(1/2 inch)
Mainsheet 25.1 m(82.3 feet)12 mm(1/2 inch)
Spinnaker sheet22.1 m(72.4 feet)12 mm(1/2 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 Sunwind 33 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