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Review of Columbia 41


Basic specs.

sail specifications
The Columbia 41 is a large sailboat designed by the American maritime architect William H. Tripp, Jr. together with B. Seeley from in the early seventies. Less than 100 boats have been produced.

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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 boat 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

The Columbia 41 has been built with more than one type of keel.

One option is a long keel. A long keel provide a better directional stability than a similar boat with a fin keel; on the other hand, better directional stability means also that the boat is more difficult to handle in a harbour with less space.

Another option is a fin keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a long keel.

The boat can enter most marinas as the draft is just about 1.50 - 1.60 meter (4.92 - 5.22 ft) dependent on the load. See immersion rate below.


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 Columbia 41 is 1.64, 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 Columbia 41 is about 224 kg/cm, alternatively 1254 lbs/inch.
Meaning: if you load 224 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1254 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 Columbia 41 is 36.2.

Low High 79% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 79% of all similar sailboat designs. This is a comfort value significantly above average.


L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Columbia 41 is 3.60.

Wide Slim 79% 0 50 100
Compared with other similar sailboats it is slimmer than 79% of all other designs. It seems that the designer has chosen a significantly more speedy hull design.


Ballast Ratio

What is a Ballast Ratio?

The ballast ratio for Columbia 41 is 45%.

Low High 79% 0 50 100
This ballast ratio shows a righting moment that is higher than 79% 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 Columbia 41 is 279 which categorizes this boat among 'medium weight cruisers'.

Heavy Light 34% 0 50 100
34% 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 Columbia 41 with ISO 8666 reference sail is 13.6, with a 135% genua the SA/D is 16.5.

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 31% 0 50 100
The Columbia 41 has more rig than 31% of all similar sailboats, which indicates that the boat is slightly 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 36m2 (387 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.

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 30.2 m(99.2 feet)12 mm(1/2 inch)
Jib/genoa halyard30.2 m(99.2 feet)12 mm(1/2 inch)
Spinnaker halyard30.2 m(99.2 feet)12 mm(1/2 inch)
Jib sheet 12.3 m(40.5 feet)14 mm(0.55 inch)
Genoa sheet12.3 m(40.5 feet)14 mm(0.55 inch)
Mainsheet 30.9 m(101.2 feet)14 mm(0.55 inch)
Spinnaker sheet27.1 m(89.1 feet)14 mm(0.55 inch)
Cunningham4.1 m(13.5 feet)12 mm(1/2 inch)
Kickingstrap8.2 m(27.0 feet)12 mm(1/2 inch)
Clew-outhaul8.2 m(27.0 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.

Do you have changes/improvements you would like to share? Upload a photo and describe what to look for.



Finally

We are always looking for new photos. If you can contribute with photos for Columbia 41 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