BoatsKer 33

Ker 33

Fractional Sloop · Fin w/bulb & Spade Rudder · First built 2014

A Jason Ker-designed fractional sloop built for performance with a high sail area-to-displacement ratio

Designed by Jason Ker, built by McConaghy Boats.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin w/bulb & Spade Rudder

See her sail

The Ker 33, on the water

The fleet's own footage — the truest look at how she really moves.

Footage from Berthon International

Is it for you?

Character

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

LivelySea-kindly

Her light displacement on a beamy beam gives 14 — a quick, lively motion that feels every wave.

Comfort ratio 14
CoastalBluewater

At 2.37 she sits above the 2.0 line — beamy for her weight, and happiest coastal.

Capsize screening 2.37
LightHeavy

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

Displacement / length 104
EasygoingPowered-up

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

Sail area / displacement 20.5
TenderStiff

38% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 38%

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

  • Draws more than ~86% of boats her size on file
  • Beamier than ~79% of boats her size on file

Compared with 2893 boats of the same type within a quarter of her length.

What the fleet has seen

The Ker 33, as the fleet has seen it

Derived from the videos the fleet has analysed of this model. ▶ marks open the moment aboard.

The Ker 33 is a fractional sloop designed by Jason Ker and built by McConaghy Boats from 2014 onward, featuring a fin with bulb and spade rudder hull. It measures 10.0 meters LOA, with a 3.6-meter beam, 2.0-meter draft, and 3749 kg displacement. The Ker 63, a larger design by Jason Ker, emphasizes deck efficiency with utility winches near the helm and a self-tacking jib. Aboard *Dark Horse of England*, a 2014 Ker 63, a rotating bow arm retracts the anchor, and a fixed bimini provides cockpit shelter.1:39 The stern lazarette accommodates a Williams 345 tender and twin stern thrusters.2:47 Below deck, the Ker 63 offers three double cabins, an additional bunk cabin, and an office in the master suite, with en-suite heads in each cabin.3:44 The starboard cabin provides direct access to the engine and generator room.5:36 The 2014 Ker 63 *Salina* features a carbon fiber Axon rig, Dyneema running rigging, and a furling Code Zero.2:03 Its helm stations include updated B&G Zeus chart plotters and twin retractable stern thrusters.0:54 The interior of *Salina* includes an open-plan saloon, a galley with a four-burner stove, and an owner’s cabin with a custom desk and en-suite head.3:31

The living fleet

Sailed by the fleet

Where the fleet has filmed this boat.

Seen 2 times across one channel of the fleet.

Basemap © Wikimedia Commons · CC BY-SA 4.0

On the water

The Ker 33 on video

What broke, what changed

Gear aboard, as the crews told it

Moments from individual boats of this model that the fleet has filmed — one crew, one piece of kit, one day on the water. Not a review of the class, and not a count of anything.

Each line is one crew's account of their own boat. Another Ker 33 may be fitted out entirely differently.

What they go for

Market signal

Where the fleet has seen this model come up for sale.

1seen for sale

From the fleet's own footage — our observed signal, not broker listings.

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
37.5%
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
20.5
Displacement / length
104.5
Comfort ratio
14.3
Capsize screening
2.37
Hull speed
7.7 kn
Pounds / inch immersion
1403
Hull
Hull type
Fin w/bulb & spade rudder
Construction
E glass, corecell
Ballast type
Lead
Production
Years built
First built 2014
Designer
Jason Ker
Builder
McConaghy Boats

Boats like this, on the water

More boats like her, on the water

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 Fast 320010.08 mSame hull familyNear-identical lengthA lightweight 10-metre offshore racer with a high sail-area-to-displacement ratio built for competitive speed
J J/999.94 mSame hull familyNear-identical lengthA high-performance fractional sloop by Alan Johnstone, designed for competitive offshore racing and fast shorthanded sailing
Saffier Yachts SE 3310.00 mSame hull familyNear-identical lengthA 10-metre fractional sloop with a 39% ballast ratio, engineered for a balance of stability and performance
Feeling 329.95 mSame hull familyNear-identical lengthA high-performance fractional sloop from the Joubert-Nivelt studio, designed with a light displacement for spirited sailing
Beneteau 32310.01 mSame hull familyNear-identical lengthA masthead sloop with a 1.45m draft and bulb keel, optimised for coastal cruising comfort since 2001
Contention 33 (Peterson)10.00 mSame hull familyNear-identical lengthA Doug Peterson-designed masthead sloop that proved its competitive pedigree with a 3rd place finish at the 1979 3/4 Ton Cup

The family

Boats like this

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

Keep asking

The fleet has more to say

Search what's been said about the Ker 33, or ask a specific question — the answer comes back written out, with links to the moments it draws on.

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