Design and Construction
Frers' design sits on a solid fiberglass hull with a sandwich deck, the cored upper structure intended to steady the interior climate against temperature swing. Both hull and deck are fiberglass, and the boat was offered with three distinct iron keels: a fin drawing 5.58 to 5.88 feet depending on load, a shallow keel at 4.43 to 4.73 feet, and a stub/centreboard that lifts to just 3.51 to 3.81 feet for shallow marinas. A 10-foot-6-inch beam and 25-foot-7-inch waterline give an l/b ratio of 2.88, while the 45% ballast ratio and 3,750 pounds of iron ballast on an 8,360-pound displacement mark her as a reasonably stiff moderate racer in the database classification. The capsize screening value of 2.10 placed her outside ocean-race acceptance, but the motion comfort ratio of 20.3 and immersion rate of 951 pounds per inch describe a predictable, settled hull in a seaway.
Rig and Handling
The 3800 carries a masthead sloop rig that the record describes as slightly underrigged, with more sail plan than only 31% of similar sailboats. Her sail-area-to-displacement ratio rises to 18.2 with a 135% genoa, enough to deliver the sparkling turn of speed Yachting Monthly noted. A Volvo Penta MD5 diesel turning a shaft drive pushes her to 6.5 knots under power, just shy of the 6.8-knot theoretical hull speed for a displacement hull of this length. The relative speed performance index of 58 and a wetted surface near 312 square feet round out a profile of a light-handed, quick boat that rewards clean sail trim rather than brute canvas.
Accommodations
Inside, the teak joinery reads as traditional rather than molded, and the eight-berth layout centers on a saloon double and a quarterberth-adjacent pilotberth. The trade-off for the elegant finish is real: Yachting Monthly found the galley cramped, and the small chart table sits over the quarterberth where it can intrude on a sleeping sailor. The headroom and berth arrangement favor a couple with guests over a full charter load, and the far less plastic interior is the detail owners and reviewers remember against the more synthetic contemporaries of the late seventies.
Known Issues
The sandwich deck is the one area where a buyer should look for soft spots or delamination, since the cored construction is the only departure from an all-solid fiberglass hull-and-deck baseline.
Refits and Ownership
With 300 built, the 3800 is a finite and recognizable generation. The MD5 is a long-lived but low-output diesel at 8 horsepower, so engine spares and shaft-log service are the routine ownership items. Keel choice matters more than most refits: a centreboard-equipped hull asks for board-trunk and pivot inspection, while fin-keel boats are simpler but draft marinas out.
The Verdict
The Dufour 3800 is a Frers-designed cruiser that punches above her 31-foot length with a quick masthead rig, three iron-keel drafts, and a teak interior that ages better than the plastic boats around her. She is no offshore racer by the capsize screen, and the galley and chart table are tight, but as a light-air fast cruiser with a sane motion profile she remains a considered choice.
Pros
- Sparkling performance with genoa-driven sail-area-to-displacement of 18.2
- Elegant teak interior, far less plastic than contemporaries
- Three iron keel options from 3.51 to 5.88 feet for varied cruising grounds
- Solid fiberglass hull with only the deck cored
Cons
- Cramped galley and small chart table over the quarterberth
- Slightly underrigged versus peers; modest 8 hp diesel
- Capsize screening of 2.10 excludes ocean-race acceptance
