The Beneteau Antares 12 2020 vs Beneteau Oceanis 45 2011 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 45 2011 measures 45,9 feet overall (2011), giving it roughly 3,2 additional feet of deck space compared to the Beneteau Antares 12 2020 at 42,7 feet (2020). Weight tells a clearer story for trailering families: the Beneteau Oceanis 45 2011 tips the scales at 23 257 lbs - 3 176 lbs less than the Beneteau Antares 12 2020 at 20 081 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 900 hp, the Beneteau Antares 12 2020 has a 846-hp advantage over the Beneteau Oceanis 45 2011's 54-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 Antares 12 2020 carries 310 gallons versus 53 gallons in the Beneteau Oceanis 45 2011. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 13 passengers - a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Displacement is where these two sailboats genuinely part ways. The Beneteau Oceanis 45 2011 displaces 23 257 lbs - a 3 176-lb difference over the Beneteau Antares 12 2020 at 20 081 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 Oceanis 45 2011 draws 7,5 ft, compared to 3,1 ft for the Beneteau Antares 12 2020. That 4,4-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.
For auxiliary power the Beneteau Antares 12 2020 carries a 900-hp engine against 54 hp on the Beneteau Oceanis 45 2011. Motoring range and ability to punch through a foul current or enter a tight marina under power will favour the more powerful installation.
For extended cruising, water capacity matters: the Beneteau Antares 12 2020 carries 169 gallons versus 98 gallons on the Beneteau Oceanis 45 2011 - a significant advantage on longer passages where watermaker or provisioning stops aren't guaranteed.
Bottom line: The Beneteau Oceanis 45 2011 is the offshore and bluewater choice - at 23 257 lbs displacement and 46 ft it has the load capacity, range, and seakeeping for extended passages. The Beneteau Antares 12 2020 at 20 081 lbs is the more nimble, accessible option - easier to single-hand and better suited to coastal and inland sailing.