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Review of Cooper 416 TM


Basic specs.

sail specifications
The Cooper 416 TM is a large sailboat designed by the Canadian maritime architect Stanley Charles Huntingford in the late seventies.

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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.


Rig

The Cooper 416 TM 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.


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 Cooper 416 TM is 1.94, 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 7.6 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 Cooper 416 TM is about 283 kg/cm, alternatively 1587 lbs/inch.
Meaning: if you load 283 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1587 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 Cooper 416 TM is 31.1.

Low High 54% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 54% 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 Cooper 416 TM is 2.96.

Slim Wide 85% 0 50 100
Compared with other similar sailboats it is more spacy than 85% of all other designs. It seems that the designer has chosen a significantly more spacy hull design.


D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Cooper 416 TM is 311 which categorizes this boat among 'medium weight cruisers'.

Heavy Light 21% 0 50 100
21% 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 Cooper 416 TM with ISO 8666 reference sail is 15.4, with a 135% genua the SA/D is 18.6.

Low High 21% 0 50 100
The SA/D ratio indicates that it is faster than 21% of all similar sailboat designs in light wind.


Maintenance

Rig

Dimensions of sail for masthead rig.

mainsail specifications headsail specifications

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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 37.3 m(122.5 feet)12 mm(1/2 inch)
Jib/genoa halyard37.3 m(122.5 feet)12 mm(1/2 inch)
Spinnaker halyard37.3 m(122.5 feet)12 mm(1/2 inch)
Jib sheet 12.7 m(41.5 feet)14 mm(0.55 inch)
Genoa sheet12.7 m(41.5 feet)14 mm(0.55 inch)
Mainsheet 31.6 m(103.8 feet)14 mm(0.55 inch)
Spinnaker sheet27.8 m(91.3 feet)14 mm(0.55 inch)
Cunningham4.2 m(13.9 feet)12 mm(1/2 inch)
Kickingstrap8.5 m(27.8 feet)12 mm(1/2 inch)
Clew-outhaul8.5 m(27.8 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