BoatsFifty 23

Fifty 23

Masthead Sloop · Fin With Rudder On Skeg · 1974–1979

A 7-metre motorsailer with a shallow 1-metre draft and protected skeg-hung rudder for versatile coastal exploration

Designed by Joubert & Joubert-Nivelt, built by Kirie.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin With Rudder On Skeg

Is it for you?

Character

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

Shoal draughtDraws 1.00 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.
LivelySea-kindly

Her heavy displacement on a beamy beam gives 24 — a moderate, middle-of-the-road motion.

Comfort ratio 24
CoastalBluewater

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

Capsize screening 1.88
LightHeavy

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

Displacement / length 287
EasygoingPowered-up

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

Sail area / displacement 17.0
TenderStiff

29% of her weight is ballast — on the tender side; she'll heel readily and want a reef sooner.

Ballast 29%

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

  • Draws less than ~79% of boats her size on file

Compared with 1128 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
29.2%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
17.0
Displacement / length
287.4
Comfort ratio
23.7
Capsize screening
1.88
Hull speed
6.0 kn
Pounds / inch immersion
589
Hull
Hull type
Fin with rudder on skeg
Construction
Fiberglass
Production
Years built
1974–1979
Units built
200
Designer
Joubert, Joubert-Nivelt
Builder
Kirie

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.

Jeanneau Sun Odyssey 267.47 mSame hull family0.5 m longerA Philippe Briand-designed fractional sloop built for coastal cruising with a stiff, stable hull form
Hurley 226.71 mSame hull family0.3 m shorterA long-running Ian Anderson design with a heavy ballast ratio, produced by multiple builders over three decades
Comet 7707.70 mSame hull family0.7 m longerA Jean-Marie Finot-designed IOR quarter-tonner with a high sail-area-to-displacement ratio for spirited club racing
Cal 257.62 mSame hull family0.6 m longerA flush-deck masthead sloop featuring a pop-top companionway that became one of the most popular models in the fleet
Martinique 257.70 mSame hull family0.7 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 family0.7 m longerThe most popular model in the builder's history, offering both inboard and outboard engine options for versatile cruising

The family

Boats like this

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

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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