Review of Bandholm 26
The Bandholm 26 is a sailboat designed by the Danish maritime architect Knud Olsen
in the mid sixties. A few hundred boats have been produced. The Bandholm 26 is built by the Danish yard Orø bådværft
Looking for a new boat? Find a Bandholm 26 or similar boat for sale
The hull is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all.
The boat is equipped with 4 berths, a galley and toilet facility.
Rig of Bandholm 26.
The boat equipped with a masthead rig. The advantage of a masthead rig is its simplicity and the fact that a given sail area - compared with a fractional rig - can be carried lower and thus with less heeling moment.
The Bandholm 26 is equipped with a long keel. A long keel provide a better directional stability than a similar boat with a fin keel; on the other hand, better directional stability means also that the boat is more difficult to handle in a harbour with less space.
The keel is made of lead. Compared with iron, lead has the advantage of being 44% heavier, which allows a smaller keel and hence less water resistance and higher speed.
The boat can enter even shallow marinas as the draft is just about 1.35 - 1.45 meter (4.43 - 4.73 ft) dependent on the load. See immersion rate
Bandholm 26 is typically equipped with an inboard engine.
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.
Stability and Safety
What is Capsize Screening Formula (CSF)?
The capsize screening value for Bandholm 26 is 1.68, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.
Theoretical Maximum Hull Speed
What is Theoretical Maximum Hull Speed?
The theoretical maximal speed of a displacement boat of this length is 6.2 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.
The immersion rate is defined as the weight required to sink the boat a certain level.
The immersion rate for Bandholm 26 is about 106 kg/cm, alternatively 594 lbs/inch.
Meaning: if you load 106 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 594 lbs cargo on the boat it will sink 1 inch.
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.
Motion Comfort Ratio
What is Motion Comfort Ratio (MCR)?
The Motion Comfort Ratio for Bandholm 26 is 28.1.
Comparing this ratio with similar sailboats show that it is more comfortable than 90% of all similar sailboat designs.
This is a comfort value significantly above average.
L/B (Length Beam Ratio)
What is L/B (Length Beam Ratio)?
The l/b ratio for Bandholm 26 is 3.38.
Compared with other similar sailboats it is slimmer than 88% of all other designs.
It seems that the designer has chosen a significantly more speedy hull design.
What is a Ballast Ratio?
The ballast ratio for Bandholm 26 is 40%.
This ballast ratio shows a righting moment that is higher than 50% of all similar sailboat designs.
This righting moment (ability to resist heeling) is spot on average!
D/L (Displacement Length Ratio)
What is Displacement Length Ratio?
The DL-ratio for Bandholm 26 is 290 which categorizes this boat among 'medium weight cruisers'.
27% of all similar sailboat designs are categorized as heavier.
A heavy displacement combined with smaller water plane area has lower acceleration and is more comfortable.
SA/D (Sail Area Displacement ratio)
SA/D (Sail Area Displacement ratio)
Indicates how fast the boat is in light wind:
- Cruising Boats have ratios 10-15
- Cruiser-Racers have ratios 16-20
- Racers have ratios above 20
- High-Performance Racers have ratios above 24
Sail-area/displacement ratio (SA/D ratio): 12.22
RSP (Relative Speed Performance)
What is Relative Speed Performance?
The Relative Speed Performance for Bandholm 26 is 12
The relative speed performance is 12 which means that a it is faster than 12% of all similar sailboat designs.
When buying anti-fouling bottom paint, it's nice to know how much to buy.
The surface of the wet bottom is about 12m2 (129 ft2).
Based on this, your favourite maritime shop can tell you the quantity you need.
Note: If you use a paint roller you will need more paint than if you use a paintbrush.
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.
Guiding dimensions of running rig
|Jib sheet ||8.1 m||(26.6 feet)||10 mm||(3/8 inch)|
|Genoa sheet||8.1 m||(26.6 feet)||10 mm||(3/8 inch)|
|Mainsheet ||20.3 m||(66.6 feet)||10 mm||(3/8 inch)|
|Spinnaker sheet||17.9 m||(58.6 feet)||10 mm||(3/8 inch)|
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