Bandholm 35 Sailboat Review, Specs, and Listings

Knud Olsen·1979·Bandholm
Bandholm 35 drawingBuilder drawing
Hull Type
Monohull · fin
Rig
Masthead Sloop
LOA
34.84' · 10.62 m
Disp.
12,787 lbs · 5,800 kg
First year
1979

The Bandholm 35 is a Danish cruiser conceived in the late 1970s by maritime architect Knud Olsen and Mogens Lorentzen. Measuring 34 feet 10 inches overall, the design entered production at the Danish yard Mariboat and at other yards. Some hulls were also sold as kits for owners to complete at home.

Measurements

Dimensions 01

Length Overall
34.84 ft
Length on deck
—
Waterline Length
26.71 ft
Beam
10.83 ft
Draft
5.91 ft
Maximum Headroom
—
Air Draft
—

Construction & hull 02

Construction
Fiberglass
Hull Type
Monohull
Keel Type
Fin
Rudder
1× Skeg-Hung
Ballast
5,512 lbs (Lead)
Displacement
12,787 lbs
Water Capacity
—
Fuel Capacity
32 gal

Rig & sails 03

Rigging Type
Masthead Sloop
Mainsail luff
—
Mainsail foot
—
Foretriangle height
—
Foretriangle base
—
Forestay Length (estimated)
—
Sail Area
—

Calculations 04

Sail Area to Displacement Ratio
—
Ballast to Displacement Ratio
43.11
Displacement to Length Ratio
299.57
Comfort Ratio
28.39
Capsize Screening Ratio
1.85
Hull Speed
6.93 kn

With a waterline just under 27 feet and a beam close to 10 feet 10 inches, the Bandholm 35 displaces about 12,800 pounds. By displacement-length measure, she sits squarely in the heavy-cruiser class.

Design and Construction

The hull and deck are fibreglass sandwich structures rather than simple single-skin layups. The original review highlights this construction because the encapsulated air layer insulates the cabin from cold water and reduces condensation when the sea is colder than the air inside; in other words, the sandwich construction improves the indoor climate. It’s a choice well suited to northern European waters rather than occasional fair-weather use.

The fin keel is iron rather than lead, an economy of the era that keeps the bulb low without the cost of denser metal. The boat carries 5,512 pounds of ballast, giving her a ballast ratio of 43 percent—higher than two-thirds of comparable designs.

Mariboat built the series, but the design also came from other yards, and some hulls were sold for home completion. As a result, finish quality can vary from one boat to another, making a careful survey particularly important.

Rig, Handling, and Performance

The Bandholm 35 is a masthead sloop with a fin keel and skeg-hung rudder. Her draft ranges from 5.91 to 6.21 feet depending on load. That restricts her to major marinas and keeps her away from drying anchorages.

Her length-to-beam ratio of 3.20 makes her roomier than half of similar boats. At the same time, the hull avoids pushing into slug territory under sail.

The capsize screening value is 1.86, while the Motion Comfort Ratio falls in the 26 to 28 range—more comfortable than 58 percent of similar sailboats. Together with the high ballast ratio, those figures reinforce the picture of a stable cruiser with damped motion rather than a lively racer.

Under power, a Volvo Penta MD11/110S diesel delivers 23 horsepower through a saildrive. It pushes the boat to about 7.0 knots, just above the theoretical displacement hull speed of 6.9.

Accommodation

The interior is finished in teak, in keeping with Danish production boats of the period. The 3.20 length-to-beam proportion turns into useful volume amidships, while the sandwich hull and deck help make the cabin more comfortable.

By buffering the interior from cold water, the sandwich construction keeps the living space drier and warmer than a solid-glass hull would. That’s a tangible benefit on a Baltic mooring during the shoulder season.

The boat also carries a 32-gallon diesel tank. Together with the modest 23-horsepower engine, this arrangement suits a couple or small family cruising at hull speed rather than a charter program.

Known Issues and Refit Considerations

The principal documented caveat is inconsistent construction quality. Because some Bandholm 35s were released as home-completed shells, an individual boat may range from a professionally finished Mariboat example to an amateur build of uncertain standard. Buyers and surveyors cannot assume consistent detailing, tabbing, or systems integration across the fleet.

Anyone working up a home-completed or early-production hull should budget for checking structural joinery and onboard systems, not just for a cosmetic refresh. The saildrive transmission and iron keel are period-correct and serviceable, but production by several builders may mean uneven spare-parts continuity and access to original specifications.

The Verdict

The Bandholm 35 is a thoughtfully insulated northern cruiser with a high ballast ratio and comfortable motion. Its main drawback is inconsistent build quality across home-completed boats and multi-yard production. This is a boat that rewards a surveyor’s eye more than a showroom glance.

Pros

  • Sandwich hull and deck insulate the cabin and reduce condensation
  • Ballast ratio of 43 percent, higher than 66 percent of similar designs
  • Motion Comfort Ratio above that of 58 percent of comparable boats
  • Teak interior with useful volume from the generous beam

Cons

  • Draft of 5.91 to 6.21 feet limits access to major marinas
  • Home-completed hulls create variable quality across the fleet
  • Iron keel rather than lead

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