Review of Tailwind 35

Basic specs.

The Tailwind 35 is a sailboat designed by the Swedish maritime architect Björn Lindell together with Sven Olof Ridder & Bergström also from Sweden in the late seventies. The Tailwind 35 is built by the Swedish yard Askos Båt AB.

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Hull

Both the hull and the deck is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all.
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.
The deck is a double deck which improves the indoor climate.

Interior

The boat is equipped with 6 berths, a galley and toilet facility.

Note: the boat has also been sold to be self-made/-interiored, which means that the quality of each boat may vary.

Rig

The Tailwind 35 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

Unknown keel type

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.

Tailwind 35 can only enter major marinas as the draft is about 1.96 - 2.06 meter (6.43 - 6.73 ft) dependent on the load. See immersion rate below.

Engine

The Tailwind 35 has been equipped with different engine alternatives.

Alternative 1:

The boat may be equipped with an inboard Yanmar 2QM15 diesel engine

Alternative 2:

The boat may be equipped with an inboard Volvo Penta MD 2030D diesel engine

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 Tailwind 35 is 1.90, 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 7.5 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 Tailwind 35 is about 220 kg/cm, alternatively 1232 lbs/inch.
Meaning: if you load 220 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1232 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 Tailwind 35 is 25.2.

Comparing this ratio with similar sailboats show that it is more comfortable than 38% of all similar sailboat designs. This comfort value is just below average.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Tailwind 35 is 3.16.

Compared with other similar sailboats it is more spacy than 58% 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 Tailwind 35 is 51%.

This ballast ratio shows a righting moment that is higher than 95% of all similar sailboat designs. A righting moment (ability to resist heeling) significantly above average.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Tailwind 35 is 198 which categorizes this boat among 'light racers'.

76% 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 Tailwind 35 with ISO 8666 reference sail is 17.5, with a 135% genua the SA/D is 21.2.

The SA/D ratio indicates that it is faster than 58% of all similar sailboat designs in light wind.

Over- / underrigged

The Tailwind 35 has more rig than 31% of all similar sailboats, which indicates that the boat is slightly underrigged.

RSP (Relative Speed Performance)

What is Relative Speed Performance?

The Relative Speed Performance for Tailwind 35 is 62

The relative speed performance is 62 which means that a it is faster than 62% of all similar sailboat designs.

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 39m² (419 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	33.8 m	(110.9 feet)	12 mm	(1/2 inch)
Jib/genoa halyard	33.8 m	(110.9 feet)	12 mm	(1/2 inch)
Spinnaker halyard	33.8 m	(110.9 feet)	12 mm	(1/2 inch)
Jib sheet	10.9 m	(35.8 feet)	14 mm	(0.55 inch)
Genoa sheet	10.9 m	(35.8 feet)	14 mm	(0.55 inch)
Mainsheet	27.2 m	(89.4 feet)	14 mm	(0.55 inch)
Spinnaker sheet	24.0 m	(78.7 feet)	14 mm	(0.55 inch)
Cunningham	3.6 m	(11.8 feet)	12 mm	(1/2 inch)
Kickingstrap	7.2 m	(23.6 feet)	12 mm	(1/2 inch)
Clew-outhaul	7.2 m	(23.6 feet)	12 mm	(1/2 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 Tailwind 35 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.