Columbia 34 Mk II CB Information, Review, Specs

Boat drawing
Make
Columbia
Model
34 Mk II CB
Number Built
Production Year(s)
1970 - 1975

The Columbia 34 Mk II CB is a classic American sailboat, renowned as a capable and comfortable coastal cruiser designed to accommodate families and weekend adventurers. Produced by Columbia Yachts, a pivotal name in the fiberglass sailboat industry, this model holds a reputation for offering good value on the used boat market due to its robust construction and stable characteristics. Designed by the esteemed naval architect William H. Tripp Jr., the Mk II CB embodies an era of innovative fiberglass production and a focus on seaworthy, comfortable cruising.

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The Columbia 34 Mk II CB entered production in 1970 and continued to be built until 1975, signaling a new chapter for Columbia Yachts. Designed by William H. Tripp Jr., this model succeeded an earlier Columbia 34, featuring his distinctive "bubble top" design, a characteristic shared with other Columbia models of the time, such as the Columbia 26 and 39. Tripp's philosophy for the Columbia 34 Mk II was centered on creating a practical coastal cruiser, offering ample interior volume and comfortable accommodations for a family of four or more.

During this period, Columbia Yachts, under the umbrella of Whittaker Corporation since 1967, was at the forefront of fiberglass boat building. The company had established itself as a pioneer, celebrated for its commitment to durable fiberglass construction, classic designs, and comfortable interiors. Columbia's emphasis on collaborating with renowned naval architects, including Tripp, ensured their yachts earned a reputation for good performance and seaworthiness. The "CB" in the model name signifies a centerboard version, offering a shallower minimum draft of 3.75 feet, which can be extended to 7.92 feet with the board lowered, providing versatility for various cruising grounds. This centerboard configuration was one of several variations, with the Columbia 34 Mk II also available in fin keel and shoal draft (SD) versions.

Sailing Performance and Handling

The Columbia 34 Mk II CB, with a length overall of 33.58 feet and a waterline length of 28.0 feet, is designed for a balanced sailing experience. Her total calculated sail area of 525.75 square feet, combined with a displacement of 13,000 pounds, results in a sail area to displacement ratio of approximately 15.15. This suggests decent performance in moderate to heavy winds, while perhaps being less spirited in very light air.

With a ballast of 5,700 pounds and a ballast to displacement ratio of approximately 0.438, the Columbia 34 Mk II CB boasts significant stiffness and stability. This high ratio indicates the boat is well-suited to standing up to a breeze, providing a comfortable and secure motion even in choppy conditions. The displacement to waterline length ratio, calculated at approximately 264.5, positions her as a moderate to heavy displacement cruiser for her size, further contributing to her stable and seaworthy characteristics. Owners frequently describe the boat as "very stable / stiff" with "excellent righting capability if capsized." The yacht features a masthead sloop rig, valued for its simplicity, and a spade rudder, contributing to responsive handling. Her theoretical hull speed is estimated at 7.09 knots.

Accommodations and Layout

The interior of the Columbia 34 Mk II CB was thoughtfully designed to maximize space and comfort for extended cruising or family weekends. Billed as a "Seven Sleeper," the layout is typical of cruising yachts from its era. The "bubble top" design is a key feature, contributing to generous headroom, reportedly up to 7 feet in the salon and 6 feet 4 inches in the forward cabin.

The traditional arrangement generally includes a V-berth forward, providing sleeping quarters. Aft of this, the main salon typically features a U-shaped dinette on the starboard side, designed to comfortably seat four adults, often with the opposing settee on the port side. The galley and navigation station are commonly located in the main salon area. While exact details can vary by individual boat and owner modifications, many interiors utilized a combination of easy-to-maintain gelcoat for countertops and interior liners, complemented by wood trim or panels for a classic marine aesthetic. The robust fiberglass construction of the hull also meant low maintenance for interior walls in some cases. Original auxiliary power was often provided by a Universal Atomic 4 gasoline engine, supported by a 30-gallon fuel tank and a 40-gallon fresh water capacity.

Owner's Perspectives

Owners of the Columbia 34 Mk II CB generally praise its sturdy construction and good value on the used boat market, often highlighting its stability and comfortable motion as key strengths. Many appreciate the interior volume offered by the Bill Tripp design, making it a viable option for coastal cruising and weekend getaways with family or friends.

However, common maintenance considerations, typical of boats of this vintage, are often mentioned. A frequently cited concern among owners involves the keel bolts, which are known to require inspection and potential maintenance over time. Additionally, as with many fiberglass boats from the 1970s, original deck fittings and portlights may eventually develop leaks, necessitating re-bedding to maintain a dry interior. Owners often advise careful inspection of these areas when considering a used Columbia 34 Mk II CB. Despite these common age-related issues, the Columbia 34 Mk II CB remains a respected and popular choice for those seeking a well-built, stable, and spacious cruiser.

Measurements

Construction & Hull

Construction Material
Fiberglass (Solid)
Hull Type
Monohull Sailboat
Keel Type
Centerboard
Rudder
1x Spade
Ballast
5700 lbs (Lead)
Displacement
13000 lbs
Water Capacity
40 gal
Fuel Capacity
30 gal

Engine

Engine Make
Universal-Atomic
Engine Model
Atomic 4
Engine Type
Engine HP
Engine Count
1
Drive Type
Fuel Type
Gasoline
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Masthead Sloop
P (Main Luff)
36.3 ft
E (Main Foot)
13 ft
I (Foretriangle Height)
42 ft
J (Foretriangle Base)
13.8 ft
Forestay Length (est)
44.21 ft
Main Sail Area
235.95 sqft
Foretriangle Sail Area
289.8 sqft
Total Sail Area (Reported)
526 sqft
Total Sail Area (Calc)
525.75 sqft

Dimensions

LOA
33.58 ft
LWL
28 ft
Beam
10 ft
Draft
7.92 ft
Max Headroom
-
Air Draft
48 ft

Calculations

Hull Speed
7.09 kn
Pounds per Inch Immersion
1