Design and Construction
Gustafsson's 351 is built on a solid fiberglass hull, a construction philosophy consistent with the marque's long practice of hand-laminated single-skin GRP below the sheerline without foam or balsa coring in the hull laminate. The yard's method of bonding two separately molded half-hulls while the polyester resin remained tacky produced a monocoque structure, and decks used a balsa-cored fiberglass laminate. At 16,535 pounds displacement with 5,952 pounds of lead ballast, the 36 percent ballast ratio places her ahead of only 27 percent of comparable designs in that metric, yet the 11-foot-5-inch beam (length-beam ratio 3.03) and 29-foot-7-inch waterline give her a roomy footprint. The capsize screening value of 1.80 and a motion comfort ratio of 31.5 — more comfortable than 79 percent of similar sailboats — underline a stable, damped motion profile suited to long spells aboard.
Rig and Handling
The 351 carries a masthead rig with a 50.85-foot mast above the waterline and a sail-area-displacement ratio of 15.52, modest by racing standards but appropriate to a heavy cruiser. Standing and running gear follow a practical cruising specification: jib and genoa sheets run 10.6 meters at 14 mm diameter, the mainsheet is 26.5 meters at the same diameter, and spinnaker sheets are 23.3 meters. The fin keel draws between 5.91 and 6.21 feet depending on load, and the wetted surface of about 387 square feet, combined with an immersion rate near 212 kg per centimeter, means she sits heavily and changes trim slowly with stores. Her theoretical hull speed is 7.3 knots, the figure expected of a displacement hull at this length.
Accommodations
Below, the 351 provides 4+1 berths and headroom described as above average for the class. The design ranks more spacious than 69 percent of all other similar sailboat designs, a consequence of the beamy hull and the Gustafsson layout priorities. Fresh water capacity is 116 US gallons, supporting extended stays without frequent replenishment. The pilothouse-cruiser lineage within the Nauticat range informs a volume-conscious interior rather than a minimalist racer's quarters.
The Verdict
The Nauticat 351 is a purpose-built heavy cruiser with a comfortable motion, generous interior volume, and a straightforward masthead rig on a solid fiberglass hull. She is not a light-air sprinter, but her numbers describe a settled, seakindly boat for distance cruising.
Pros
- Motion comfort ratio superior to 79 percent of similar designs
- Above-average headroom and berth count of 4+1
- Solid fiberglass hull construction without below-waterline coring
Cons
- Ballast ratio lower than 73 percent of comparable designs
- Modest sail-area-displacement ratio of 15.52 limits light-wind acceleration
- Heavy displacement and 387 sq ft wetted surface constrain top speed to hull speed
