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Review of Yamaha 35 CS


Basic specs.

sail specifications
The Yamaha 35 CS is a sailboat designed by the Japanese maritime architect bureau Yamaha in the early eighties.

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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 219.0 liter fresh water capacity.


Rig

The Yamaha 35 CS 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.


Engine

The boat may be equipped with an inboard Yanmar 3QM diesel engine

The fuel tank has a capacity of 196.0 liters (51 US gallons, 43 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 Yamaha 35 CS is 1.85, 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 6.9 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 Yamaha 35 CS is about 179 kg/cm, alternatively 1005 lbs/inch.
Meaning: if you load 179 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1005 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 Yamaha 35 CS is 29.3.

Low High 66% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 66% 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 Yamaha 35 CS is 3.21.

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


D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Yamaha 35 CS is 332 which categorizes this boat among 'heavy cruisers'.

Heavy Light 18% 0 50 100
18% of all similar sailboat designs are categorized as heavier. A heavy displacement combined with smaller water plane area has lower acceleration and is more comfortable.


SA/D (Sail Area Displacement ratio)

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

The SA/D for Yamaha 35 CS with ISO 8666 reference sail is 13.3, with a 135% genua the SA/D is 16.2.

Low High 12% 0 50 100
The SA/D ratio indicates that it is faster than 12% of all similar sailboat designs in light wind.


Maintenance

Rig

Dimensions of sail for masthead rig.

mainsail specifications headsail specifications

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
UsageLengthDiameter
Mainsail halyard 26.3 m(86.3 feet)12 mm(1/2 inch)
Jib/genoa halyard26.3 m(86.3 feet)12 mm(1/2 inch)
Spinnaker halyard26.3 m(86.3 feet)12 mm(1/2 inch)
Jib sheet 10.7 m(35.2 feet)14 mm(0.55 inch)
Genoa sheet10.7 m(35.2 feet)14 mm(0.55 inch)
Mainsheet 26.9 m(88.1 feet)14 mm(0.55 inch)
Spinnaker sheet23.6 m(77.5 feet)14 mm(0.55 inch)
Cunningham3.4 m(11.0 feet)12 mm(1/2 inch)
Kickingstrap6.7 m(22.0 feet)12 mm(1/2 inch)
Clew-outhaul6.7 m(22.0 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.

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Finally

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If you have any comments to the review, improvement suggestions, or the like, feel free to contact us. Criticism helps us to improve.



References