BoatsMark 25

Mark 25

Fractional Sloop · Fin w/transom Hung Rudder · First built 1984

A high-performance fractional sloop from George Cuthbertson’s post-C&C studio, built for speed with a 20.56 SA/D ratio

Designed by Motion Designs Limited & C&C Design, built by Ontario Yachts.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin w/transom Hung Rudder

Is it for you?

Character

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

LivelySea-kindly

Her moderate displacement on a beamy beam gives 15 — a quick, lively motion that feels every wave.

Comfort ratio 15
CoastalBluewater

At 2.31 she sits above the 2.0 line — beamy for her weight, and happiest coastal.

Capsize screening 2.31
LightHeavy

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

Displacement / length 230
EasygoingPowered-up

20.6 — plenty of sail for her weight; lively and quick to respond.

Sail area / displacement 20.6
TenderStiff

43% of her weight is ballast — stiff, standing up well to her sails.

Ballast 43%

Powered-up and quick to accelerate — this one likes to sail.

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
43.1%
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
20.6
Displacement / length
230.5
Comfort ratio
15.4
Capsize screening
2.31
Hull speed
6.0 kn
Pounds / inch immersion
661
Hull
Hull type
Fin w/transom hung rudder
Construction
Fiberglass
Production
Years built
First built 1984
Units built
17
Designer
Motion Designs Limited, C&C Design
Builder
Ontario Yachts, Eli Laminates

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.

Cal 257.62 mSame hull familyNear-identical lengthA flush-deck masthead sloop featuring a pop-top companionway that became one of the most popular models in the fleet
Comet 7707.70 mSame hull family0.2 m longerA Jean-Marie Finot-designed IOR quarter-tonner with a high sail-area-to-displacement ratio for spirited club racing
Martinique 257.70 mSame hull family0.2 m longerA Brazilian-built masthead sloop with a 44% ballast ratio, offering a stiff and stable platform for coastal cruising
Maxi Yachts 777.70 mSame hull family0.2 m longerThe most popular model in the builder's history, offering both inboard and outboard engine options for versatile cruising
Galion 226.71 mSame hull family0.8 m shorterDesigned by Ian Hannay, this fractional sloop proved her mettle by winning both the Round the Island and JOG races in 1968
Puma 277.95 mSame hull family0.5 m longerA Ron Holland-designed masthead sloop with a fin keel and spade rudder, built for performance-oriented coastal cruising

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.

Keep looking

Nothing filmed of this one yet

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