BoatsR.n.s.a. Twenty-Four

R.n.s.a. Twenty-Four

Fractional Sloop · Long Keel w/trans. Hung Rudder · First built 1947

A pioneering offshore one-design conceived by Capt. J.H. Illingworth that claimed the 1949 RORC small-class championship

Designed by Laurent Giles & Jack Laurent Giles, built by Camper.

LOA
Beam
Draft (max)
Displacement
Hull type
Long Keel w/trans. 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 heavy displacement on a narrow beam gives 39 — a sea-kindly motion in a seaway.

Comfort ratio 39
CoastalBluewater

At 1.41 she sits well under the 2.0 line — a solidly ocean-capable hull for her size.

Capsize screening 1.41
LightHeavy

312 — heavy for her waterline, built to carry stores and ride steadily.

Displacement / length 312
EasygoingPowered-up

14.0 — modest power for her weight; easygoing rather than lively, and happier with a breeze.

Sail area / displacement 14.0

Built heavy and sea-kindly — a boat made to cross oceans and forgive a rough night.

  • Draws more than ~86% of boats her size on file
  • Narrower than ~94% of boats her size on file

Compared with 428 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
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
14.0
Displacement / length
311.6
Comfort ratio
38.6
Capsize screening
1.41
Hull speed
6.6 kn
Pounds / inch immersion
643
Hull
Hull type
Long keel w/trans. hung rudder
Construction
Wood
Production
Years built
First built 1947
Units built
15
Designer
Laurent Giles, Jack Laurent Giles
Builder
Camper, Nicholson, Nicholsons

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.

Bayfield 30/329.75 mSame hull familyNear-identical lengthA rare 32C variant featuring a tall rig, built in a limited run of five hulls for increased sail area
Mariner 319.35 mSame hull family0.4 m shorterA long-keeled masthead ketch and the first fiberglass hull from Far East Yachts, featuring a plywood-cored deck
Mariner 329.70 mSame hull familyNear-identical lengthA long-keeled masthead ketch by Clair Oberly, featuring a distinctive Clipper bow and an open, taffrail-surrounded cockpit
Pacific Seacraft Orion 279.42 mSame hull family0.3 m shorterA heavy-displacement cutter designed by Henry Mohrschladt for offshore stability and traditional long-keel handling
Falmouth Cutter 229.30 mSame hull family0.4 m shorterA narrow-beamed 30-foot cruiser with a shallow 1.07-meter draft and a traditional long-keeled hull
Allied Boat Co. Seawind9.30 mSame hull family0.4 m shorterA Thomas Gillmer-designed masthead ketch with a long keel, marking both the beginning and the end of the Allied Boat Co.

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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