2007–2012 · designed by Marc Lombard · built by Jeanneau
The Sun Odyssey 42DS (Double Stern) was designed as a performance-oriented cruiser for shorthanded couples and families, distinguished by its raised coachroof and twin-companionway DS layout that creates separated aft cabins. Marc Lombard drew a fin-keel hull with a single spade rudder and deck-stepped fractional sloop rig, aimed at a blend of upwind efficiency and comfortable offshore capability. Its reputation sits at the crossover between a serious passage-maker and a comfortable charter/liveaboard platform, though the DS architecture sacrifices some cockpit simplicity for below-deck privacy.
This is a general read on the Jeanneau Sun Odyssey 42DS class — informed
background, not a verdict on any individual boat. Condition, refit history,
and how a particular hull was sailed and stored matter far more than class
reputation. Use it to know what to look for; for a read on a specific
listing, run a free FairKeel report on that boat.
At a glance
Hull form
Fin Keel
Rudder
Spade
Mast step
Deck Stepped
Hull construction
Fiberglass
Keel structure
Keel bolts into a grid glued to the hull
Production
2007–2012
Built in
France
Before any offshore passage: the keel on this boat bolts into an inner grid that is glued to the hull. A grounding, even a light one, or a hard passage in heavy weather can break that bond where nobody can see it. Ask for the boat's grounding and heavy-weather history in writing and have a surveyor inspect the keel attachment and the grid around it. UK guidance: MGN 613.
What the Jeanneau Sun Odyssey 42DS is known for
DS twin-aft-cabin layout delivers genuine owner-and-guest separation rarely matched at this length in production cruisers.
Deck-stepped fractional sloop rig with a stiff fin-keel hull provides confident heavy-weather performance and real bluewater range.
High-quality Jeanneau fit-and-finish for the era, with good hardware spec from the factory (Lewmar winches, Harken blocks).
Resale market is active; parts and service knowledge are widely available through the Jeanneau dealer and Sun Odyssey owner networks.
Known trade-offs
Single spade rudder and dual-wheel steering system: bearing and stock maintenance is non-negotiable and often deferred by previous owners.
Balsa-cored decks are vulnerable around any hardware penetration — moisture ingress is endemic on examples with deferred maintenance.
DS aft-cabin portlights and hull-deck joint are persistent leak sources that can silently saturate structural laminate before the owner notices.
Charter-origin examples (a significant portion of used inventory) often carry high engine hours, worn upholstery, and neglected spares inventory.
Cockpit ergonomics are compromised by the DS companionway arrangement — the split cockpit entry limits certain sail-handling configurations compared to single-companionway competitors.
Rudder bearing and stock (single spade)priority: offshore, coastal
The single spade rudder is controlled by dual wheels via a shared steering system. Inspect for play at the rudder head, check the stock for fatigue or corrosion, and verify the bearing carrier condition. A worn or cracked spade rudder stock is a critical offshore safety item on a boat of this vintage.
Hull-deck joint and DS portlightspriority: liveaboard, offshore, coastal
The DS aft-cabin architecture places hull-deck joints and opening portlights in areas subject to standing water and flex. Sealant failures here lead to hidden laminate saturation and teak-liner rot in the aft cabins. Probe every aft portlight frame and the inboard hull-deck joint flange for soft laminate.
Deck core moisture (coachroof and side decks)priority: offshore, liveaboard, coastal
Balsa-cored deck panels are present throughout. Tap-test and moisture-meter the coachroof, side decks, and any hardware-penetration zones. Saturated core is common where chainplates, stanchion bases, and winch pads have not been maintained. Wet core on the coachroof is the single most common expensive find on this class.
Standing rigging and deck-stepped mast partnerspriority: offshore, racing, coastal
Boats at 13–18 years old are at or past a first full rigging replacement. Inspect shroud terminals (swage or Sta-Lok) for crevice corrosion, check spreader roots, and examine the deck-step mast boot and collar seal for water intrusion into the cabin. Original roller-furling foil extrusions may show UV fatigue.
Engine and drive train (Yanmar 4JH series)priority: offshore, motor, liveaboard
Most examples carry a Yanmar 4JH-series diesel. Check raw-water impeller service history, heat-exchanger zinc condition, shaft seal (lip or stuffing box), and cutless bearing. High hours without documented service intervals are common on charter-origin hulls. Transmission shift-cable stretch is a minor but frequent nuisance.
How it fits your plans
Offshore
Offshore depends first on the keel structure: the keel bolts into a grid glued to the hull, and a grounding or a hard passage in heavy weather can break that bond out of sight, so get the written grounding and heavy-weather history and a surveyor's inspection of the keel attachment and grid before any passage. Capable passage-maker with a stiff hull and deck-stepped fractional rig, but the spade rudder demands attentive maintenance — a neglected bearing can become a serious offshore liability. With rigging and rudder gear in good order, ocean crossings are within the design envelope, subject to the keel structure.
Coastal
Comfortable and competent coastal cruiser; the DS layout suits couples who want independent aft-cabin privacy on weekend circuits. Performance is solid upwind in 12–20 knots.
Liveaboard
One of the stronger liveaboard options in the 42-foot French production class — the DS double-aft-cabin layout provides genuine separation, and the raised coachroof headroom is appreciated below. Ventilation in the aft cabins can be limited in hot climates without added hatches.
Weekending
Slightly overbuilt for casual weekending but perfectly functional; shorthanded sail handling is manageable with furling headsail and in-mast or in-boom furling if fitted.
Racing
Not a racer; the cruising displacement and DS superstructure carry windage penalties. PHRF club racing only, and not competitively.
Motor
Not applicable.
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boat suits the plans you describe in a few short questions.
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