Columbia 43 Miii Information, Review, Specs

Columbia 43 Miii Drawing
Make
Columbia
Model
43 Miii
Builder
Columbia Yachts
Designer
William Tripp Jr.
Number Built
96
Production Year(s)
1973 - ??

The Columbia 43 MIII represents the final and most refined evolution of one of Bill Tripp Jr.’s most successful hull designs. Launched in the early 1970s, the Mark III (MIII) variant was Columbia Yachts' response to cruisers who admired the speed of the original flush-deck Columbia 43 but desired a more traditional silhouette and increased interior volume. By replacing the flat racing deck with a raised trunk cabin, the MIII significantly increased standing headroom and light below deck without compromising the powerful, flat-bottomed hull that made the design a formidable competitor in the Southern Ocean Racing Conference (SORC). This model serves as a bridge between the era of dedicated IOR (International Offshore Rule) racers and the modern era of high-volume performance cruisers.

Sailing Performance & Handling

The Columbia 43 MIII is defined by Bill Tripp's signature design philosophy: a high-aspect-ratio rig paired with a hull that features a relatively flat bottom and a deep fin keel. This combination provides the boat with exceptional upwind performance, allowing it to point higher than many of its heavy-displacement contemporaries. With a displacement of approximately 21,000 pounds and nearly 10,000 pounds of lead ballast, the MIII possesses a high ballast-to-displacement ratio of nearly 47%, contributing to a stiff, stable ride in heavy air.

The spade rudder, positioned well aft, gives the boat a high degree of maneuverability and responsiveness, though owners often note that the helm requires attention when running downwind in a following sea due to the hull's powerful shoulders. In light air, the MIII's large sail plan—often exceeding 800 square feet with a standard 100% foretriangle—keeps the boat moving when others are forced to motor. Sailors transitioning from modern fin-keel boats will find the MIII’s tracking to be superior, a result of the careful balance Tripp achieved between the center of buoyancy and the center of lateral resistance.

Interior Comfort & Variations

The transition from the original flush-deck 43 to the MIII coachroof drastically altered the onboard experience. The "Mark III" configuration provides a much brighter main salon, thanks to the addition of large side ports that allow natural light to flood the 12-foot, 4-inch beam. The interior is characterized by an expansive "Great Room" feel, often finished in rich teak veneers and solid wood trim that were hallmarks of the Whittier-era Columbia production.

The layout typically features a large U-shaped galley to port and a dedicated navigation station to starboard. The MIII’s sibling model, the original flush-deck Columbia 43, utilized a more cavernous, tunnel-like interior; in contrast, the MIII feels like a true home afloat. Headroom is generous throughout, often exceeding 6'4" in the main cabin. Sibling variants built on this same hull included a few semi-custom layouts, including a "tri-cabin" arrangement which attempted to squeeze an extra sleeping area into the forepeak, though the standard two-cabin layout remains the most popular for its spaciousness. Because Columbia also produced the Coronado 41 and later the Hughes-Columbia 43, sailors may see similarities in hull form, but the MIII remains the most sought-after for its balance of woodwork quality and structural integrity.

The Columbia 43 hull has a storied racing pedigree, most notably through the success of Encore, a Columbia 43 that achieved significant victories in West Coast offshore races. While the MIII was marketed more toward the luxury cruising segment, it inherited the speed of its racing siblings. The model has also gained a following in the "liveaboard" community on YouTube and in cruising blogs, where it is frequently cited as one of the best "bang-for-your-buck" bluewater boats for sailors looking to cross oceans on a budget.

Known Issues & Buyer’s Checklist

Purchasing a Columbia 43 MIII requires a rigorous inspection of several era-specific construction techniques:

  1. Deck Core Delamination: Like many boats of this era, the MIII utilized a balsa-cored deck. Moisture ingress around the stanchion bases, handrails, and the mast step is common. Soft spots in the deck are a high-signal indicator of core rot that may require extensive "dry-out" or replacement.
  2. Chainplate Reinforcement: The stainless steel chainplates are glassed into the hull structure. Over decades, water can migrate down the chainplate and cause oxidation or weaken the surrounding fiberglass. Buyers should look for signs of "weeping" or rust streaks on the interior cabinetry where the chainplates pass through the deck.
  3. Rudder Post and Bearings: The spade rudder design puts significant stress on the rudder post and its bearings. Inspect for play in the steering and any signs of "osmotic blistering" on the rudder blade itself, which was a known issue on some early 70s Columbia molds.
  4. Original Plumbing and Wiring: Many MIIIs still carry their original "Whittaker-era" electrical panels and gate valves. A total refit of the through-hull fittings (replacing gate valves with proper seacocks) and an update to the DC wiring system are usually necessary for offshore safety.

Community & Resources

Owners of the Columbia 43 MIII are supported by a dedicated community. The Columbia Yacht Owners Association (CYOA) remains the primary technical repository, offering digitized versions of original brochures and line drawings for the 43-foot series. Additionally, the Bill Tripp Jr. design archives provide historical context for the hull's development.

The Verdict

The Columbia 43 MIII is a robust, "classic plastic" cruiser that offers a rare combination of Bill Tripp’s racing DNA and genuine interior luxury. It is an ideal vessel for the sailor who values speed and windward performance but refuses to sacrifice the comfort of a traditional trunk cabin layout.

Pros:

  • Excellent light-air performance and high-speed potential for a vintage cruiser.
  • Enormous interior volume and beam, making it a premier liveaboard candidate.
  • Heavy, hand-laid fiberglass hull provides a sense of security in offshore conditions.

Cons:

  • Maintenance-heavy balsa-cored decks are prone to saturation.
  • The spade rudder requires a vigilant hand when sailing downwind in heavy seas.
  • The large sail plan and high-aspect rig can be a handful for a single-handed sailor without modern furling systems.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Fin
Rudder
1x Skeg-Hung
Ballast
10300 lbs (Lead)
Displacement
22000 lbs
Water Capacity
50 gal
Fuel Capacity
50 gal

Dimensions

Length Overall (LOA)
43.75 ft
Waterline Length (LWL)
32.67 ft
Beam
12.33 ft
Draft
7 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Masthead Sloop
P (Main Luff)
48.2 ft
E (Main Foot)
14.2 ft
I (Foretriangle Height)
56 ft
J (Foretriangle Base)
18.24 ft
Forestay Length (est)
58.9 ft
Sail Area
853 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
17.38
Ballast / Displacement Ratio
46.82
Displacement / Length Ratio (D/L) Ratio
281.66
Comfort Ratio
33.29
Capsize Screening Formula
1.76
Hull Speed
7.66 kn