The Beneteau First 310 1990 vs Beneteau Oceanis 351 1994 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
Size is the most obvious dividing line here. The Beneteau Oceanis 351 1994 measures 34,8 feet overall (1994), giving it roughly 3,7 additional feet of deck space compared to the Beneteau First 310 1990 at 31,1 feet (1990). Weight tells a clearer story for trailering families: the Beneteau Oceanis 351 1994 tips the scales at 11 684 lbs — 3 527 lbs less than the Beneteau First 310 1990 at 8 157 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
The Beneteau First 310 1990 carries a rated maximum of 18 hp. Engine data for the Beneteau Oceanis 351 1994 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.
For family outings this is probably the sharpest distinction between the two. The Beneteau Oceanis 351 1994 is rated for 10 passengers, while the Beneteau First 310 1990 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Beneteau Oceanis 351 1994 could be the deciding factor.
Displacement is where these two sailboats genuinely part ways. The Beneteau Oceanis 351 1994 displaces 11 684 lbs — a 3 527-lb difference over the Beneteau First 310 1990 at 8 157 lbs. That gap separates two entirely different categories of sailing: the heavier boat is built for offshore passage-making and load-carrying, while the lighter hull rewards performance sailing and easier handling in lighter air.
Draft is a practical consideration that many buyers underestimate until they're already at the marina. The Beneteau First 310 1990 draws 6,0 ft, compared to 4,0 ft for the Beneteau Oceanis 351 1994. That 2,0-foot difference affects which anchorages you can access, which haul-out facilities will take you, and how carefully you need to read the tide tables in shallower cruising grounds.
The Beneteau First 310 1990 uses Sloop rigging. The Beneteau First 310 1990 has a documented auxiliary engine of 18 hp.
Bottom line: The Beneteau Oceanis 351 1994 is the offshore and bluewater choice — at 11 684 lbs displacement and 35 ft it has the load capacity, range, and seakeeping for extended passages. The Beneteau First 310 1990 at 8 157 lbs is the more nimble, accessible option — easier to single-hand and better suited to coastal and inland sailing.