BoatsHarmony Yachts (Groupe Poncin Yachts) 42

Harmony Yachts (Groupe Poncin Yachts) 42

Fractional Sloop · Fin w/bulb & Spade Rudder · 2005–2011

A 12.86-metre cruiser with a 33% ballast ratio and a hull speed of 8.1 knots, built by Harmony Yachts for coastal work

Designed by Mortain & Mavrikios.

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

See her sail

The Harmony Yachts (Groupe Poncin Yachts) 42, on the water

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

Footage from LE VOYAGE DE NAMASTE

Is it for you?

Character

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

LivelySea-kindly

Her moderate displacement on a moderate beam gives 26 — a moderate, middle-of-the-road motion.

Comfort ratio 26
CoastalBluewater

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

Capsize screening 1.94
LightHeavy

180 — moderately heavy for her waterline, a balanced cruising weight.

Displacement / length 180
EasygoingPowered-up

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

Sail area / displacement 19.2
TenderStiff

34% of her weight is ballast — on the tender side; she'll heel readily and want a reef sooner.

Ballast 34%

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

What the fleet has seen

The Harmony Yachts (Groupe Poncin Yachts) 42, as the fleet has seen it

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

The Harmony Yachts (Groupe Poncin Yachts) Harmony 42 is a 12.9-meter fractional sloop designed by Mortain, Mavrikios, built from 2005 to 2011. It features a fin with bulb and spade rudder hull, a 4.0-meter beam, and a 2.0-meter draft, displacing 8959 kg. The model was available with an optional tandem cast iron keel, a 55 hp engine, and a 505-liter water tank.

The living fleet

Sailed by the fleet

Where the fleet has filmed this boat.

Basemap © Wikimedia Commons · CC BY-SA 4.0

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
33.6%
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
19.2
Displacement / length
180.2
Comfort ratio
26.0
Capsize screening
1.94
Hull speed
8.1 kn
Pounds / inch immersion
1711
Hull
Hull type
Fin w/bulb & spade rudder
Construction
Fiberglass
Ballast type
Lead
Production
Years built
2005–2011
Designer
Mortain, Mavrikios
Builder
Harmony Yachts

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.

Dufour Yachts 425 Grand Large12.90 mSame hull familyNear-identical lengthA 12.9-meter fractional sloop with a 2.1-meter bulb keel, optimized for a stable 8.13-knot hull speed
Dufour 425 Grand Large Boat Tour | Our home at seafrom Sailing Blue Prince
J Boats Tillotson Pearson J/4212.80 mSame hull familyNear-identical lengthA 12.8-metre cruiser featuring a fin keel with bulb and spade rudder, designed for offshore stability and speed
Back on land after nearly 3 years - nasty surprise?? Shipyard part 1/20:47from Eternal Sailing
Jeanneau Sun Odyssey 42 DS12.93 mSame hull familyNear-identical lengthA 12.9-meter deck saloon cruiser featuring a high-volume hull and a deep, bulb-weighted fin keel for stability
Finally Cheap Enough to Be Dangerous - This 42-Foot Jeanneau DSfrom Practical Sailor
Bavaria Yachts 4112.83 mSame hull familyNear-identical lengthA 1995 fractional sloop with a high 23.59 SA/D ratio, designed for performance-oriented cruising
WHO WOULD'VE THOUGHT WE'D BE SAILING HERE AGAIN! EP-897:58from Leading the Escapade
X Yachts X-4312.93 mSame hull familyNear-identical lengthA Niels Jeppesen-designed fractional sloop balancing performance-oriented sail area with a stiff, bulb-keel hull
I finally found my next boat!from Sam Holmes Sailing
Grand Soleil 40 (Polli)12.90 mSame hull familyNear-identical lengthA Matteo Polli-designed fractional sloop optimized for ORC competition with a high sail-area-to-displacement ratio
Sailing Alone in Fog Without Losing Your Cool11:09from The Mariner

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.

Harmony Yachts (Groupe Poncin Yachts) Harmony 52-5A high-performance fractional sloop from Mortain and Mavrikios, featuring a powerful sail-to-displacement ratio.Harmony Yachts (Groupe Poncin Yachts) Harmony 47A 14.39-metre cruiser with a 19.61 sail-to-displacement ratio, designed for balanced performance and coastal speedHarmony Yachts (Groupe Poncin Yachts) Harmony 38A Mortain-Mavrikios fractional sloop featuring an optional tandem keel and a spacious design for coastal cruising

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