Jeanneau Sun Odyssey 31 Sailboats for Sale

Layouts on the Used Market

The Sun Odyssey 31 left the factory with two interior arrangements, and both circulate on the used market. The simpler layout sleeps four across a forward V-berth and a double quarter berth, with a U-shaped saloon and the galley positioned amidships to port. The alternative arrangement stretches accommodation to six by replacing the U-settee with a pair of straight settees and a drop-leaf table, repositioning the galley to an L-shaped unit at the companionway with a nav station opposite on starboard. On the brokerage market, the six-berth three-cabin layout tends to be the more commonly encountered of the two, partly because ex-charter examples are a meaningful fraction of available inventory — Jeanneau built the Sun Odyssey 31 partly for charter fleets, and those boats often carry the higher-capacity interior. Buyers wanting the simpler, roomier four-berth saloon will find it available but should be prepared to look a little harder.

Equipment and Common Upgrades

A well-maintained Sun Odyssey 31 on the brokerage market typically carries considerably more equipment than it left the factory with, as owners have had several decades to add comfort and safety gear. Autopilots are found on the great majority of examples, as are chartplotters — the combination of the two having become standard practice for short-handed cruising. Heating systems are commonly fitted, which reflects the boat's strong European owner base where shoulder-season sailing demands it. Life rafts, inverters, and spinnaker gear are also frequently present.

Furling mains appear on a notable share of the fleet, often as owner conversions from the original slab-reefing arrangement. Electric winches and hot water systems are often seen on boats that have had active cruising careers, and the factory swim platform — standard on production — carries over intact on most examples. Owners who have pushed the boat into extended passages frequently added solar panels, a bimini or dodger combination, cockpit showers, and AIS transponders. Teak deck overlays and asymmetric spinnakers appear occasionally, typically on boats that passed through the hands of performance-oriented or aesthetics-conscious owners. Freezer upgrades are a less common but not unusual addition on longer-range cruising versions.

What to Inspect

A boat built in fiberglass in the early 1990s needs careful osmotic assessment before purchase. Osmotic blistering in the gelcoat and laminate is the predictable concern on any hull of this era, and a survey should specifically probe the waterline zone and keel-to-hull joint. The fin keel attachment deserves particular attention: separation or weeping at the keel stub interface is a known point of fatigue on fin-keel cruisers subjected to hard use, and the ballast-to-displacement ratio is substantial enough that loads on the joint are meaningful.

The Yanmar 2GM20 diesel is a well-documented engine with an extensive service record across the industry, but examples in this hull are now several decades old. Raw water impellers, heat exchanger cores, and fuel injection components should be assessed for service history. Standing rigging is a critical inspection item on any boat this age — wire shrouds and stays from the original installation should have been replaced at least once, and older rod or wire that cannot be dated should be treated as a replacement item in negotiation.

Interior joinery on ex-charter boats can show cumulative wear beyond what the hull and rig reflect, and the head compartment plumbing — including seacocks — should be inspected carefully. Deck hardware fasteners on boats that have lived in northern European waters can corrode through the deck core if bedding compounds have failed, making chainplate and stanchion bases worth a careful check.

Availability and Buyer's Takeaway

The Sun Odyssey 31 sold well across Europe during its production run, and the used fleet reflects that geography. The strongest concentrations of brokerage inventory appear in the United Kingdom, France, the Netherlands, and Germany, where the boat was popular with club sailors and coastal cruisers. Occasional examples surface in North American and Mediterranean markets, but European brokerages and classified listings are the primary hunting ground.

For a boat of this vintage, condition and survey results matter far more than equipment lists. A pre-purchase survey from a surveyor familiar with French fiberglass construction of this era is essential. Buyers who approach this model with clear eyes will find a genuinely capable, sensibly sized cruiser that punches above its length in offshore stability thanks to a ballast-to-displacement ratio that gives the hull real confidence in a seaway.

Inspection checklist:

• Hull osmosis survey, waterline zone and topsides
• Keel-to-hull joint integrity and fastener condition
• Standing rigging age and service history
• Yanmar 2GM20 service records, raw water circuit, injectors
• Seacocks and through-hull fittings throughout
• Deck hardware bedding, chainplates, stanchion bases
• Interior joinery condition (especially ex-charter examples)
• Safety equipment certification and service dates (life raft, flares)
• Electrical system age and wiring integrity