Review of Marieholm 26

Marieholm 26 anno 1982. www.sy-gretel.de

Basic specs.

The Marieholm 26 is a sailboat designed by the Swedish maritime architect Tord Arne Sundén in the mid seventies. A few hundred boats have been produced. The Marieholm 26 is built by the Swedish yard Marieholms Bruk AB.

Looking for a new boat? Find a Marieholm 26 or similar boat for sale

Hull

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.

Interior

Interior of Marieholm 26 anno 1982. www.sy-gretel.de

The boat is equipped with 2 cabins, 4 berths, a galley and toilet facility.

Rig

The boat equipped with a fractional rig. A fractional rig has smaller headsails which make tacking easier, which is an advantage for cruisers and racers, of course. The downside is that having the wind from behind often requires a genaker or a spinnaker for optimal speed.

Keel

Keel of Marieholm 26 anno 1982. www.sy-gretel.de

The Marieholm 26 has been built with more than one type of keel.

One option is 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 iron. Many people prefer lead keel in favour of iron. The main argument is that lead is much heavier than iron and a lead keel can therefore be made smaller which again result in less wet surface, i.e. less drag. In fact iron is quite heavy, just 30% less heavy than lead, so the advantage of a lead keel is often overstated.

The boat can enter most marinas as the draft is just about 1.64 - 1.74 meter (5.38 - 5.68 ft) dependent on the load. See immersion rate below.

Engine

Marieholm 26 is typically equipped with an inboard Volvo Penta MD5 diesel engine at 7.0 hp (5 kW), which gives a max speed about 3.8 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.

Stability and Safety

What is Capsize Screening Formula (CSF)?

The capsize screening value for Marieholm 26 is 1.63, 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 6.0 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.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Marieholm 26 is about 90 kg/cm, alternatively 507 lbs/inch.
Meaning: if you load 90 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 507 lbs cargo on the boat it will sink 1 inch.

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.

Motion Comfort Ratio

What is Motion Comfort Ratio (MCR)?

The Motion Comfort Ratio for Marieholm 26 is 27.7.

Comparing this ratio with similar sailboats show that it is more comfortable than 92% 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 Marieholm 26 is 3.61.

Compared with other similar sailboats it is slimmer than 98% of all other designs. It seems that the designer has chosen a significantly more speedy hull design. This type of design is also referred to as 'needle'.

Ballast Ratio

What is a Ballast Ratio?

The ballast ratio for Marieholm 26 is 46%.

This ballast ratio shows a righting moment that is higher than 76% of all similar sailboat designs. A righting moment (ability to resist heeling) significantly above average.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Marieholm 26 is 299 which categorizes this boat among 'medium weight cruisers'.

24% 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)

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

The SA/D for Marieholm 26 with ISO 8666 reference sail is 13.9, with a 135% genua the SA/D is 15.8.

The SA/D ratio indicates that it is faster than 24% of all similar sailboat designs in light wind.

Over- / underrigged

The Marieholm 26 has more rig than 8% of all similar sailboats, which indicates that the boat is significantly underrigged.

RSP (Relative Speed Performance)

What is Relative Speed Performance?

The Relative Speed Performance for Marieholm 26 is 18

The relative speed performance is 18 which means that a it is faster than 18% of all similar sailboat designs.

Maintenance

Bottom Paint

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 18m² (193 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.

Rig

Dimensions of sail for fractional rig.

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.

**Guiding dimensions of running rig**
Usage	Length		Diameter
Mainsail halyard	23.2 m	(76.0 feet)	8 mm	(5/16 inch)
Jib/genoa halyard	23.2 m	(76.0 feet)	8 mm	(5/16 inch)
Spinnaker halyard	23.2 m	(76.0 feet)	8 mm	(5/16 inch)
Jib sheet	7.9 m	(26.0 feet)	10 mm	(3/8 inch)
Genoa sheet	7.9 m	(26.0 feet)	10 mm	(3/8 inch)
Mainsheet	19.9 m	(65.1 feet)	10 mm	(3/8 inch)
Spinnaker sheet	17.5 m	(57.3 feet)	10 mm	(3/8 inch)
Cunningham	3.4 m	(11.2 feet)	8 mm	(5/16 inch)
Kickingstrap	6.8 m	(22.3 feet)	8 mm	(5/16 inch)
Clew-outhaul	6.8 m	(22.3 feet)	8 mm	(5/16 inch)

Boat owner's ideas

This section shown boat owner's changes, improvements, etc. Here you might find inspiration for your boat.

Do you have changes/improvements you would like to share? Upload a photo and describe what to look for.

Finally

We are always looking for new photos. If you can contribute with photos for Marieholm 26 it would be a great help.

If you have any comments to the review, improvement suggestions, or the like, feel free to contact us. Criticism helps us to improve.

References

[Ref 1]: ISO 8666 Small craft — Principal data.
[Ref 3]: ISO 12215-5 Small craft — Hull construction and scantlings.