COLUMBIA 31

Main

Appendages
Keel/Cbrd.
Construction
FG
First built hull
1965
Hull type
Monohull
Last built hull
1968
Model
Atomic 4
Sailboat builder
Columbia Yachts
Sailboat designer
Charles Morgan

Dimensions

Ballast weight
1542.0
Beam
3.0
Displacement
3856.0
Draft
2.13
Max Draft
2.13
Min Draft
0.94
Overall length
9.3
Waterline length
6.55

Sails

E
4.42
Est. Forestay Length
11.36
Fore area
18.68
I
10.82
J
3.45
Mainsail area
20.54
P
9.3
Total area
39.21

Engine

Engine(s) power
20.0
Engines amount
1
Fuel type
Gas
Make
Universal

Performance

Ballast ratio
40.0
Capsize Screening Formula
1.93
Comfort Ratio
25.86
Critical hull speed
6.21
Displacement-length ratio (DLR)
381.82
Upwind sail area to displacement
16.26

Accomodation

The Columbia 31 is a popular sailing boat that was designed by William Crealock and built by Columbia Yachts in the 1960s and 1970s. It is a classic cruising sailboat known for its sturdy construction, comfortable accommodations, and good sailing performance.

Here are some key features and specifications of the Columbia 31:

1. Design: The Columbia 31 features a traditional masthead sloop rig with a fin keel and a skeg-mounted rudder. It has a moderate displacement hull with a relatively narrow beam, providing good stability and performance.

2. Construction: The boat is constructed using fiberglass, which was a relatively new material at the time. The hull is solid fiberglass, while the deck is cored with plywood or balsa wood for added strength and insulation.

3. Dimensions: The Columbia 31 has an overall length of about 31 feet (9.4 meters) and a beam of around 9 feet (2.7 meters). It typically has a draft of about 5 feet (1.5 meters), which allows for good upwind performance.

4. Accommodations: The interior of the Columbia 31 is designed for comfortable cruising. It typically features a V-berth in the forward cabin, a main salon with a dinette that converts into a double berth, a well-equipped galley, a navigation station, and a head with a marine toilet and shower. The boat can accommodate around four to six people, making it suitable for small families or couples.

5. Sailing Performance: The Columbia 31 is known for its good sailing performance, especially in moderate to heavy winds. It has a relatively tall mast and a large sail area, allowing it to sail well in a variety of conditions. The boat is also known for its stability and seaworthiness, making it suitable for offshore cruising.

6. Availability: The Columbia 31 was produced in significant numbers during its production run, and many are still actively sailing today. They can often be found on the used boat market at varying price ranges, depending on the condition and equipment.

Overall, the Columbia 31 is a well-regarded cruising sailboat that offers a comfortable and enjoyable sailing experience. Its classic design, solid construction, and good performance make it a popular choice among sailors looking for a reliable and affordable cruising boat.

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