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Review of Cape North 43


Basic specs.

sail specifications
The Cape North 43 is a large sailboat designed by the Canadian maritime architect Edward S. Brewer in the late seventies. The Cape North 43 is built by the Chinese yard Cape Yachts Ltd.

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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 681.0 liter fresh water capacity.


Rig

The Cape North 43 is equipped with a ketch rig. A ketch rig is generally considered easier to handle, because the sails are smaller, and because it can sail on most points to the wind with one sail completely taken down for repair or while reefing. The sail configuration of a ketch allows for better comfort and stability when sailing downwind or on a broad reach.


Keel

Fin keel

The Cape North 43 is equipped with a fin keel. The fin keel is the most common keel and provides splendid manoeuvrability. The downside is that it has less directional stability than a long keel.

The boat can enter even shallow marinas as the draft is just about 0.67 - 0.77 meter (2.20 - 2.50 ft) dependent on the load. See immersion rate below.


Engine

Cape North 43 may be equipped with an inboard Universal M50B diesel engine

The fuel tank has a capacity of 341.0 liters (90 US gallons, 75 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 Cape North 43 is 1.73, 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 8.0 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 Cape North 43 is about 278 kg/cm, alternatively 1559 lbs/inch.
Meaning: if you load 278 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1559 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 Cape North 43 is 34.6.

Low High 69% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 69% 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 Cape North 43 is 3.41.

Wide Slim 58% 0 50 100
Compared with other similar sailboats it is slimmer than 58% of all other designs. It seems that the designer has chosen a slightly more speedy hull design.


Ballast Ratio

What is a Ballast Ratio?

The ballast ratio for Cape North 43 is 45%.

Low High 85% 0 50 100
This ballast ratio shows a righting moment that is higher than 85% 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 Cape North 43 is 252 which categorizes this boat among 'light crusers & offshore racers'.

Heavy Light 42% 0 50 100
42% 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 Cape North 43 with ISO 8666 reference sail is 15.1, with a 135% genua the SA/D is 18.3.

Low High 10% 0 50 100
The SA/D ratio indicates that it is faster than 10% of all similar sailboat designs in light wind.


Over- / underrigged

Low High 21% 0 50 100
The Cape North 43 has more rig than 21% of all similar sailboats, which indicates that the boat is significantly underrigged.


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 47m2 (505 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 ketch 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 36.6 m(120.0 feet)14 mm(0.55 inch)
Jib/genoa halyard36.6 m(120.0 feet)14 mm(0.55 inch)
Spinnaker halyard36.6 m(120.0 feet)14 mm(0.55 inch)
Jib sheet 13.2 m(43.2 feet)16 mm(5/8 inch)
Genoa sheet13.2 m(43.2 feet)16 mm(5/8 inch)
Mainsheet 33.0 m(108.1 feet)16 mm(5/8 inch)
Spinnaker sheet29.0 m(95.1 feet)16 mm(5/8 inch)
Cunningham4.3 m(14.0 feet)14 mm(0.55 inch)
Kickingstrap8.5 m(28.0 feet)14 mm(0.55 inch)
Clew-outhaul8.5 m(28.0 feet)14 mm(0.55 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 Cape North 43 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