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
Westerly Marine Construction Ltd. Nomad 226.78 mSame hull family0.8 m longerA twin-keel masthead sloop designed by Denys Rayner as a refined evolution of the Westerly 22 for shoal-water cruising
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
Westerly Marine Ltd. Cirrus 226.71 mSame hull family0.7 m longerA John Butler-designed fractional sloop with a fin keel and spade rudder, built for performance in a compact 22-foot hull
Beneteau First 2357.11 mSame hull family1.1 m longerA Groupe Finot-designed fractional sloop built for performance, featuring a light displacement and high sail area ratio
Com-Pac Yachts 195.79 mSame hull family0.2 m shorterA Robert K. Johnson-designed masthead sloop built for shoal-draft gunkholing with a stable 40% ballast ratio

The family

Related models

The designs closest to hers — usually the rest of the builder's range, sometimes the same hull sold under another name.

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