BoatsLoch Long One-Design

Loch Long One-Design

Fractional Sloop · Fin Keel · First built 1938

A slender, Norwegian-inspired fractional sloop commissioned in 1938 that maintains active racing fleets today

Designed by James Croll, built by William Boag.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin Keel

Is it for you?

Character

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

TrailerableBeam 1.78 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 817 kg of hull, so roughly 1,400 kg on a trailer: check that against your own towing rating.Ramp-launchableAbout 817 kg of hull, with a keel that raises or a draft shallow enough to float off a trailer — she can go back on the trailer at the ramp, not only into the water.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 narrow beam gives 15 — a quick, lively motion that feels every wave.

Comfort ratio 15
CoastalBluewater

1.92 — just under the 2.0 offshore line; her beam is modest for her weight.

Capsize screening 1.92
LightHeavy

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

Displacement / length 187
EasygoingPowered-up

15.7 — moderate power for her weight; steady, all-round performance.

Sail area / displacement 15.7
TenderStiff

39% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 39%

A capable cruiser that sits just inside the offshore line — coastal work with real passages in her.

  • Lighter than ~84% of boats her size on file
  • Draws less than ~80% of boats her size on file
  • Narrower than ~98% of boats her size on file

Compared with 768 boats of the same type within a quarter of her length.

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
38.9%
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
15.7
Displacement / length
187.3
Comfort ratio
15.0
Capsize screening
1.92
Hull speed
5.4 kn
Pounds / inch immersion
339
Hull
Hull type
Fin Keel
Construction
Wood (clinker)/Wood(carvel)
Production
Years built
First built 1938
Units built
138
Designer
James Croll
Builder
William Boag, Robertson, Sons

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.

Bavaria Yachts 6066.50 mSame hull familyNear-identical lengthA lightweight 6.5-meter fractional sloop with a high sail-area-to-displacement ratio for spirited coastal sailing
J Boats Tillotson Pearson J/226.86 mSame hull family0.5 m longerA high-performance fractional sloop with a high sail-area-to-displacement ratio designed for competitive one-design racing
Santana 206.16 mSame hull family0.2 m shorterA high-performance fractional sloop with a 1996 deck redesign that added an open transom and a roomier cockpit
Borge Bringsvaerd Bb116.18 mSame hull family0.2 m shorterA Norwegian-built classic with an active class association that has raced continuously since the 1960s
J Boats Tillotson Pearson J/247.32 mSame hull family0.9 m longerThe world's most popular one-design keelboat, featuring a light 1406kg displacement for responsive, agile handling
J Boats J/706.93 mSame hull family0.5 m longerA high-performance fractional sloop designed by Alan Johnstone, with over 1,100 units delivered for one-design racing

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

Two ways to keep looking — both search what the fleet has actually recorded.

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