columbia 34 sailboat data

Review of Columbia 34

Basic specs..

The Columbia 34 is equipped with a centerboard keel. A centerboard keel is a pivoting lifting keel, allowing to sail both coastal and inland waters.

The boat can enter even shallow marinas as the draft is just about 1.07 - 1.17 meter (3.51 - 3.81 ft) dependent on the load.

The boat is typically equipped with a Universal Atomic 4 gasoline engine at 30.0 hp (22 kW), which gives a max speed about 6.2 knots.

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.

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 6.5 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.

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.

What is Displacement Length Ratio?

What is SA/D (Sail Area Displacement ratio)?

Maintenance

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.

This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.

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Columbia 34 MKII - Sailboat Data, Parts & Rigging

Sailboat data, rig dimensions and recommended sail areas for Columbia 34 MKII sailboat. Tech info about rigging, halyards, sheets, mainsail covers and more.

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Columbia Yachts Columbia 34

General Data

Shipbuilder:, see also: boats for sale.

• Delphia Yachts DELPHIA 34
• Elan Marine Elan 31S
• Adria Event 34
• Beneteau First 34.7

Overall length:

Waterline length:, displacement:, straightening:, sail details mq.

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• Sailboat Guide

Columbia 34 MK II

Columbia 34 MK II is a 33 ′ 7 ″ / 10.2 m monohull sailboat designed by William H. Tripp Jr. and built by Columbia Yachts between 1970 and 1975.

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

• SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
• D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

• D: Displacement of the boat in pounds.
• LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

• D: Displacement of the boat in pounds
• LOA: Length overall in feet
• Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

Keel/CB and shoal draft versions were also available.

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COLUMBIA 34 Detailed Review

If you are a boat enthusiast looking to get more information on specs, built, make, etc. of different boats, then here is a complete review of COLUMBIA 34. Built by Columbia Yachts and designed by Wirth Munroe, the boat was first built in 1966. It has a hull type of Keel/CB & spade rudder and LOA is 10.36. Its sail area/displacement ratio 15.60. Its auxiliary power tank, manufactured by Universal, runs on Gas.

COLUMBIA 34 has retained its value as a result of superior building, a solid reputation, and a devoted owner base. Read on to find out more about COLUMBIA 34 and decide if it is a fit for your boating needs.

Boat Information

Boat specifications, sail boat calculation, rig and sail specs, auxillary power tank, contributions, who designed the columbia 34.

COLUMBIA 34 was designed by Wirth Munroe.

Who builds COLUMBIA 34?

COLUMBIA 34 is built by Columbia Yachts.

When was COLUMBIA 34 first built?

COLUMBIA 34 was first built in 1966.

How long is COLUMBIA 34?

COLUMBIA 34 is 7.19 m in length.

What is mast height on COLUMBIA 34?

COLUMBIA 34 has a mast height of 9.75 m.

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Columbia 34 Just bought Anyone else have one?

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Just bought a 1971 Columbia Mark II 34. Anyone out there have one and want to share information, tips and whatall?  

A '74 of the same model You may want to read the posts here: http://forums.projectbluesphere.com/ShowPost.aspx?PostID=63 He bought a '74 of the same model. Consider searching for other posts by the same user at that site, because I believe he started a blog about his restoration projects and process. He definitely liked the headroom... Jim H  

From an earlier discussion on the topic, I have some experience with the Columbia 34 Mk II having helped a friend fix one up and then delivering it back to Savannah and daysailed on her in a range of conditions. Columbias (especially during this period) were the Hunters of their day. In other words these boats were designed to provide a lot of space for a low price. Build quality on these boats was quite shoddy. Glass work was heavy by modern standards but because of the sloppy workmanship, laminate schedule and choices of resin was not especially sturdy. There are several serious vulnerabilities in the design of these boats. The 'scimitar' design of the rudder places more than usual loads on the rudderpost and the rudder posts of that era tended to be smaller than are used today on post hung rudders of today. Fatigue in the rudderpost would make it very suspect. The other known problem is with the keel bolts. Many if not all of these boats had galvanized iron keel bolts. If these have not been replaced by a prior owner, the keel bolts are well past their useful lifespan. On the boat that I worked on there were issues with the fiberglass adjacent to the keel bolts that had a serious set of flexure cracks radiating from each bolt. (Invisible to the surveyor at the time of survey but which showed up when the keel bolts were replaced.) Even for their day these were very mediocre sailing boats with a very uncomfortable motion. The rig proportion results in a boat that is not very easy to sail shorthanded and which requires a comparatively large sail inventory. Standard hardware simply was not up to the task of handling the large headsails required for light air performance. These are difficult boats to sail in breeze but especially when the winds are gusty. The full bow and high freeboard resulted in boats that were especially poor in a chop. The website that was linked mentioned the probelem with insuring older boats. This is a very real issue. Several years ago the insurance industry noticed disproportionately large claims on damaged older boats. The industry had noticed that impact damage to the hulls of older fiberglass boats was far more extensive than would normally be anticipated. In the study, sections of actual hulls from older boats were distruction tested for strength. The results of this extensive testing showed that the techniques and materials used during this era were partiaularly prone to fatigue and lacked the strength of more modern laminates. While the results varied with manufacturers, for the more common high production builders (Columbia was specifically cited) the choice of accelerators, large proportion of non-directional laminates, and resin rich ratios, resulted in a particularly poor initial impact resistance (despite the thickness of the laminate), which was shown to deteriorate dramatically over time. This makes it especially important to inspect high load areas for flexural fatique damage. Respectfully, Jeff  

Jeff, given your last post on Columbias/age of boats.... Jeff, you mentioned that older boats (and I don't know if you were referring only to columbias or also to other boats of that era) were vulnerable to fibreglass problems due to the layup process. Aside from getting a good survey of an older boat before purchase, do you have an opinion, based on your experience, as to what age becomes suspect in an older boat--ie. should one avoid buying a boat built before 1975, for example, because of these kind of problems. I am asking because one often reads that fibreglass boats if well cared for can last almost forever; however, others have written that all fibreglass boats absorb water over time, and will gradually deteriorate/delaminate. I have been looking at 1970s and 1980s boats for my next purchase--Ericson, Aloha, C&C, Crown are high on my list of possibilities. While I would prefer to get a 1980s in really good condition, there are some very nice 1970s with rebuilt engines, replaced standing rigging & sails, that have tempted me--should I be staying away from these in your opinion? I also welcome the opinions of others, if others want to comment. Thanks, Frank.  

I also bought a 1971 columbia 34 mkii trying to fiind out info on v drives  

It's probably a Walters - it was on my 43 and every engine shot I've seen of that series of boats had the same looking V-drive.  

I have a Columbia 32 from about the same area (1976) and it has a Walter V-drive, too. Works great. For all questions, Columbia, look at columbiasailingyachts : Columbia Sailing Yachts  

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1971 Columbia 34 SL

1971 columbia 34 sl specs.

• Boat Type : Monohull Sailboats
• Quantity: 1
• Horse Power: 30
• Type: Gasoline
• Hull Material : Fiberglass
• Beam : 10'0"
• Length : 34'
• Net Weight : 12000 lbs
• Looking for the Boat Manual? 1971 Columbia Yachts 34 SL Request Boat Manual Now

Related Boats

• 1966 Columbia 34 SL
• 1967 Columbia 34 SL
• 1972 Columbia 34 SL
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Columbia 34 mk ii sd

The columbia 34 mk ii sd is a 33.58ft masthead sloop designed by william tripp sr. and built in fiberglass by columbia yachts since 1970..

The Columbia 34 mk ii sd is a moderate weight sailboat which is slightly under powered. It is very stable / stiff and has an excellent righting capability if capsized. It is best suited as a bluewater cruising boat.

Columbia 34 mk ii sd for sale elsewhere on the web:

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And The Best Columbia River Fishing Boat Is...

By Ken Schultz

Jun 19, 2024

Diverse species, fishing techniques, and water conditions make it hard to pick the best Columbia River fishing boat, but here are some options

There is no perfect boat for all types of fishing. Every boat is a compromise in one or more (usually more) ways. I’ve been down this road myself when I was primarily a freshwater angler, and then when I became primarily a saltwater angler. So when asked recently about the best Columbia River fishing boat I had to answer none….and also, it depends.

Depends on what? In the case of the best Columbia River fishing boat question, it depends on what fish species you’ll be targeting, where on the river, at what seasons, under what conditions, and with how many companions or family members. Because of this waterways diversity, Columbia River fishing boats run a wide gamut.

Bass boats. I know Columbia River anglers who only fish for smallmouth bass and do so out of 17- to 20-foot fiberglass bass boats powered by big-horsepower outboard motors. But that really wouldn’t cut it well for open-water walleye trolling, salmon fishing, crabbing, or sturgeon fishing on the lower Columbia, or shallow water boating in the upper reaches. Not to mention that a bass boat is generally not a great fishing vessel for a group of anglers, in case you’re thinking of taking a few pals or the entire family out.

Jet boats. Another common boat here as well as on various Pacific Northwest Rivers, is a jet boat, or jet sled. These are flat-bottomed aluminum boats with jet-drive inboard or outboard motors and designed for negotiating the shallowest waters. Jet-drive motors have no propeller; water moves through an impeller-driven pump that streams water backward and pushes the boat forward. These are good for upriver adventures but don’t handle well in open water, and are not very utilitarian when it comes to trolling and bucking big waves.

Deep-vees. Many Columbia River anglers are keen on large deep-vee aluminum boats due to the big-water conditions that can exist here. These have higher profiles (i.e. a higher gunwale) than bass boats, make for a smoother ride in big waves, and are well suited to bottom fishing and trolling , which makes them more amenable to multi-species and multi-technique fishing activities.

Deep vee aluminum boats are mostly available as tiller-steered models, with 17 feet a minimum length up to 23 feet, and some are especially designed for both deep and shallow water boating. Unlike some other boats, they are also amenable for the attachment of downriggers and other trolling-related hardware. So for overall utility, some type of deep-vee boat is most practical, and maybe these are the best boats for fishing the Columbia River.

You can, however, fish on the Columbia in certain places out of a kayak, canoe, PWC, even a jonboat, so there are many things to consider no matter what vessel you choose. If you’re wondering about the best Columbia River fishing boat, remember to consider what type of fishing you’ll be doing (and most often if you’ll be doing varied types of fishing), where you’ll be boating and fishing (near the mouth, in the main stem, way up in the shallows, etc.), and how many people will be joining you.

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