BoatsStur-Dee Cat

Stur-Dee Cat

Cat (Marconi) · Keel/centreboard · First built 1947

A 1947 Edson Schock design, this lightweight Marconi-rigged catboat features a keel-centerboard hull for shoal draft

Designed by Edson I. Schock.

LOA
Beam
Draft (max)
Displacement
Hull type
Keel/Cbrd.

Is it for you?

Character

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

TrailerableBeam 2.13 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 308 kg of hull, so roughly 900 kg on a trailer: check that against your own towing rating.Ramp-launchableAbout 308 kg of hull, with a keel that raises or a draught shallow enough to float off a trailer — she can go back on the trailer at the ramp, not only into the water.Shoal draughtDraws 0.25 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 6 — a quick, lively motion that feels every wave.

Comfort ratio 6
CoastalBluewater

At 3.19 she sits above the 2.0 line — beamy for her weight, and happiest coastal.

Capsize screening 3.19
LightHeavy

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

Displacement / length 133
EasygoingPowered-up

26.9 — a lot of sail for her weight; powered-up and eager, a real performer.

Sail area / displacement 26.9

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

  • Beamier than ~76% of boats her size on file

Compared with 107 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
Cat (Marconi)
Ratios
SA / displacement
26.9
Displacement / length
133.2
Comfort ratio
5.8
Capsize screening
3.19
Hull speed
4.9 kn
Pounds / inch immersion
329
Hull
Hull type
Keel/Cbrd.
Construction
Wood
Production
Years built
First built 1947
Designer
Edson I. Schock
Builder
Stur-Dee Boat Co

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.

Drascombe Dabber4.72 mSame hull family0.4 m longerA John Watkinson-designed sprit-rigged daysailer with a centreboard, built since 1970 for shallow-water versatility
Getting Underway - Portland to Boston23:16from The Mariner
RS Quest4.29 mSame hull familyNear-identical lengthA 140kg fractional sloop with a centerboard trunk designed for stable, versatile training and family sailing
Sea Cadet National Sailing and Windsurfing Regatta 20250:48from City Sailing

The family

Boats like this

Nearby designs by size, type, and era — worth a look alongside her.

W. D. Schock Corp. MetcalfA lightweight 3.96-meter Marconi-rigged dinghy designed by C. William Lapworth for competitive racing at Balboa Yacht ClubO'Day Corp. InterclubA Sparkman & Stephens-designed cat-rigged dinghy still actively raced in frostbiting fleets on the US East CoastBeetle CatA strict one-design wooden class in continuous production since 1921, built for traditional daysailingCape Cod CatA gaff-rigged catboat by Charles Wittholz featuring a keel-centerboard configuration for versatile shoal-draft sailing

Keep looking

Nothing filmed of this one yet

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

Search the fleet for boats like thisAsk the fleet about the Stur-Dee Cat

The newsletter

New boats, new stories. Every week, everywhere.

One email from the fleet — boats newly added, videos newly analysed. No noise.

Report an issue