BoatsRK Industries 21

RK Industries 21

Masthead Sloop · Swing Keel w/outboard Rudder · First built 1972

A Peter Barrett-designed masthead sloop with a swing keel, built for performance and shoal-water versatility since 1972

Designed by Peter Barrett.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Swing Keel w/outboard Rudder

Is it for you?

Character

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

TrailerableBeam 2.41 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 907 kg of hull, so roughly 1,500 kg on a trailer: check that against your own towing rating.Ramp-launchableAbout 907 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 0.30 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.
LivelySea-kindly

Her light displacement on a beamy beam gives 10 — a quick, lively motion that feels every wave.

Comfort ratio 10
CoastalBluewater

At 2.52 she sits above the 2.0 line — beamy for her weight, and happiest coastal.

Capsize screening 2.52
LightHeavy

147 — light for her waterline, so she is easily driven and quick to accelerate.

Displacement / length 147
EasygoingPowered-up

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

Sail area / displacement 20.8
TenderStiff

33% of her weight is ballast — on the tender side; she'll heel readily and want a reef sooner.

Ballast 33%

Light and lively — happiest day-sailing and coastal-hopping in settled weather.

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
33.3%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
20.8
Displacement / length
146.9
Comfort ratio
10.3
Capsize screening
2.52
Hull speed
5.7 kn
Pounds / inch immersion
516
Hull
Hull type
Swing keel w/outboard rudder
Construction
Fiberglass
Production
Years built
First built 1972
Designer
Peter Barrett
Builder
RK Industries, Coastal Recreation Inc

Boats like this, on the water

Nobody has filmed this one — but these are close.

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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.

RK Industries 20A raised-deck masthead sloop with a swing keel, offering increased interior volume for trailerable coastal cruisingRl 28A lightweight, fractional-rigged swing keel sloop designed by Rob Legg for high-performance trailerable cruising

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Search the fleet for boats like thisAsk the fleet about the RK Industries 21

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