Beneteau First 31.7 Sailboats for Sale

The hull is single-skinned fibreglass with a balsa-cored deck, an integral GRP structural grid, and an L-shaped bulb keel that gave the design a noticeable step up in initial stiffness over its predecessor. The fractional, keel-stepped Sparcraft rig carries a nearly masthead foretriangle and uses a straightforward double-spreader arrangement without runners, which simplifies shorthanded sailing considerably. The 21 hp Yanmar diesel is the standard engine across nearly all examples built, though a handful of very early production boats occasionally surface with a Volvo instead. Fuel tankage is modest — carry a jerry can if you plan extended coastal passages — and water capacity, while reasonable for the size, rewards careful management on longer trips.

Layouts on the Used Market

The 31.7 was offered in two layout variants, and the market reflects that mix. The more common configuration on the used market is the three-cabin arrangement; a two-cabin version is also available, and both are worth considering depending on your crew size and priorities. In either layout, the forward V-berth owner's cabin features a large overhead hatch, lockers on both sides, and standing headroom just under six feet at the centre; a filler panel converts the berth to a social space when the boat is underway. The main saloon runs twin straight settees flanking a centreline drop-leaf table with Beneteau's signature wine-bottle stowage built into the base — practical and a period detail that regulars of the brand will recognise immediately. The galley occupies the port side aft of the saloon, fitted with a two-burner propane stove and oven, a single sink, and a 12-volt refrigerator. A forward-facing nav station sits opposite. Aft of the saloon, a dedicated second cabin with a double berth and a hanging locker gives the boat genuine cabin separation, making it usable for a couple with guests or children. The single head and shower is accessed from the main cabin.

Equipment and Common Upgrades

Most used examples are comfortably equipped beyond the original specification. Chartplotters and autopilots are commonly fitted — the combination makes the 31.7 viable for short-handed offshore passages and is essentially standard on the boats you will encounter today. Spinnaker gear is very frequently present, reflecting the racing background of the typical owner; many boats carry a symmetrical kite, and asymmetric spinnakers are often seen as an owner upgrade for easier downwind handling without a pole. Gennakers are sometimes fitted as well. The original twin Lewmar halyard winches on the cabintop and self-tailing sheet winches in the cockpit are generally present and in reasonable condition, though winch servicing is worth budgeting for on older examples. Hot water systems and onboard heating are often seen, particularly on boats from northern European markets where cooler sailing seasons demand them. Life rafts and AIS transponders appear on some examples, especially on boats whose owners used them for coastal passages or club offshore events, and represent a sensible upgrade to look for when comparing options.

What to Inspect

The balsa-cored deck deserves close attention. Beneteau used balsa coring extensively through this era, and while the material is excellent when dry, delamination from water ingress around fittings, stanchion bases, and through-deck hardware is a known vulnerability across the line. Tap-test the deck thoroughly and probe any soft spots; remediation can range from a straightforward re-bedding to expensive panel replacement if the core has rotted extensively. Pay particular attention to the area around the mast base and chainplates, where movement under load can work sealant loose over time.

The keel-to-hull joint should be inspected carefully. The L-shaped iron ballast bulb gives the 31.7 its characteristic stiffness, but iron keels are susceptible to rust staining and surface corrosion, which can seep into the joint and cause cosmetic or structural problems if ignored. Examine the joint for cracking, rust weeping, or opening at the garboard and factor any remediation into your offer.

The fractional rig is relatively simple, but the standing rigging should be assessed for age and condition. There are no runners, so the rig loads concentrate differently than on a masthead boat; check the mast base, the chainplates, and the spreader roots. Halyards and sheets on boats that have seen active racing lives may have been replaced frequently, which is a positive sign of attentive ownership, or may have been neglected if the boat spent years on a mooring without use.

Below decks, the cherry wood veneer finish was attractive when new but shows its age on boats that have lived hard racing lives — inspect for delamination, swelling around the saloon table, and moisture staining in the bilge and under the berths. The Yanmar 21 hp diesel is generally reliable and well-supported; check for regular servicing, clean impeller history, and no signs of overheating. The fuel tank is small enough that some owners have allowed old diesel to sit, so a tank clean may be needed.

The tiller fitting and rudder bearing deserve a look. These boats were raced hard and the steering loads are real; check for slop in the bearing and any scoring or deformation at the tiller head casting.

Availability and Buyer's Takeaway

The First 31.7 is widely available across France and the United Kingdom, where the model has always had a strong club racing following. Mediterranean markets — particularly Greece, Italy, and Spain — carry healthy supplies of well-equipped examples that often have warmer-water histories and correspondingly less of the dampness-related deck issues seen in northern European boats. Australia maintains a solid presence of the model as well, and buyers there will find examples that have been actively raced in competitive club fleets.

For a buyer who wants a boat that punches well above its size in performance, rewards good sail trim, and sleeps four comfortably for weekends or short passages, the First 31.7 is a compelling choice on the used market. Go in with clear eyes about the tiller-only helming, the modest tankage, and the deck-core vulnerability common to the era, and you will be well-positioned to find a sound boat.

Pre-purchase checklist:

• Tap-test the entire balsa-cored deck, focusing on stanchion bases, mast partners, and hardware penetrations
• Inspect the iron keel-to-hull joint for rust weeping, cracking, or movement
• Examine chainplates, spreader roots, and mast base for corrosion or fatigue
• Verify Yanmar service history: impeller changes, heat exchanger condition, raw water system
• Check for delamination of interior cherry veneer and moisture in the bilge
• Confirm standing rigging age and assess for replacement
• Test autopilot, chartplotter, and any navigational electronics
• Assess tiller bearing for slop and inspect the rudder stock
• Confirm spinnaker gear condition if present, including pole fittings and halyard blocks
• Check propane system compliance and hose condition