BoatsMarieholm Boats AC-20

Marieholm Boats AC-20

Fractional Sloop · Fin With Rudder On Skeg · First built 1975

A center-cockpit, aft-cabin cruiser that adapts the MS-20 hull into a compact, 6-meter weekend layout

Designed by Olle Enderlain, built by Marieholms Bruk.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin With Rudder On Skeg

Is it for you?

Character

Where this design lands on the numbers a shopper trusts — read straight from her own ratios.

TrailerableBeam 2.20 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 1,250 kg of hull, so roughly 1,850 kg on a trailer: check that against your own towing rating.Shoal draftDraws 0.90 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.
LivelySea-kindly

Her moderate displacement on a beamy beam gives 17 — a quick, lively motion that feels every wave.

Comfort ratio 17
CoastalBluewater

2.06 — right around the 2.0 line, the edge between coastal and offshore.

Capsize screening 2.06
LightHeavy

241 — moderately heavy for her waterline, a balanced cruising weight.

Displacement / length 241
TenderStiff

29% of her weight is ballast — on the tender side; she'll heel readily and want a reef sooner.

Ballast 29%

A balanced, easily-driven cruiser — comfortable and forgiving for coastal work.

The record

Full specifications

The complete reference set — tap any figure to switch between metric and imperial.

Dimensions
Weights
Ballast / displacement
28.8%
Rig & sail area
Rig
Fractional Sloop
Ratios
Displacement / length
240.9
Comfort ratio
17.0
Capsize screening
2.06
Hull speed
5.6 kn
Pounds / inch immersion
444
Hull
Hull type
Fin with rudder on skeg
Construction
Fiberglass
Production
Years built
First built 1975
Units built
150
Designer
Olle Enderlain
Builder
Marieholms Bruk, Marieholm Boats

Boats like this, on the water

Nobody has filmed this one — but these are close.

Comparable boats the fleet has on camera: same type, within a quarter of her length. Open the boat, or watch the video — a timestamp means she only appears in passing.

Marieholm Boats S-206.00 mSame hull familyNear-identical lengthA short-run 1970s fractional sloop with a fin keel and transom-hung rudder, designed for coastal agility
Halcyon 236.93 mSame hull family0.9 m longerA triple-keeled masthead sloop by Alan H. Buchanan, offering shallow-draft versatility based on the earlier Crystal 23
Galion 226.71 mSame hull family0.7 m longerDesigned by Ian Hannay, this fractional sloop proved her mettle by winning both the Round the Island and JOG races in 1968
J Boats Tillotson Pearson J/247.32 mSame hull family1.3 m longerThe world's most popular one-design keelboat, featuring a light 1406kg displacement for responsive, agile handling
Catalina Yachts 22 MKII7.26 mSame hull family1.3 m longerAn upgraded 1995 iteration of the classic trailerable cruiser, featuring a fin keel and transom-hung rudder
Sirius 7277.27 mSame hull family1.3 m longerA development of the Sirius 24, this fractional sloop features a fin keel with skeg-mounted rudder for balanced handling

The family

Related models

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