The Beneteau First 310 1990 vs Beneteau Gran Turismo 45 2021 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 Gran Turismo 45 2021 measures 48,6 feet overall (2021), giving it roughly 17,5 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 Gran Turismo 45 2021 tips the scales at 24 782 lbs — 16 625 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 power gap is worth calling out. Rated to 440 hp, the Beneteau Gran Turismo 45 2021 has a 422-hp advantage over the Beneteau First 310 1990's 18-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Beneteau Gran Turismo 45 2021 carries 119 gallons versus 17 gallons in the Beneteau First 310 1990. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Beneteau Gran Turismo 45 2021 is rated for 14 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 Gran Turismo 45 2021 could be the deciding factor.
Displacement is where these two sailboats genuinely part ways. The Beneteau Gran Turismo 45 2021 displaces 24 782 lbs — a 16 625-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 3,9 ft for the Beneteau Gran Turismo 45 2021. That 2,1-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. For auxiliary power the Beneteau Gran Turismo 45 2021 carries a 440-hp engine against 18 hp on the Beneteau First 310 1990. Motoring range and ability to punch through a foul current or enter a tight marina under power will favour the more powerful installation.
Bottom line: The Beneteau Gran Turismo 45 2021 is the offshore and bluewater choice — at 24 782 lbs displacement and 49 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.