The Beneteau Oceanis 510 1994 vs Beneteau Swift Trawler 42 2010 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 510 1994 measures 50,2 feet overall (1994), giving it roughly 5,9 additional feet of deck space compared to the Beneteau Swift Trawler 42 2010 at 44,3 feet (2010). Weight tells a clearer story for trailering families: the Beneteau Oceanis 510 1994 tips the scales at 30 864 lbs — 30 842 lbs more than the Beneteau Swift Trawler 42 2010 at 22 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 Oceanis 510 1994 carries a rated maximum of 80 hp. Engine data for the Beneteau Swift Trawler 42 2010 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Beneteau Swift Trawler 42 2010 carries 396 gallons versus 148 gallons in the Beneteau Oceanis 510 1994. 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 Oceanis 510 1994 is rated for 15 passengers, while the Beneteau Swift Trawler 42 2010 caps at 13. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Beneteau Oceanis 510 1994 could be the deciding factor.

The Beneteau Oceanis 510 1994 has a documented displacement of 30 864 lbs. Displacement data wasn't available for the other boat in this comparison.

Draft is a practical consideration that many buyers underestimate until they're already at the marina. The Beneteau Oceanis 510 1994 draws 5,9 ft, compared to 3,0 ft for the Beneteau Swift Trawler 42 2010. That 2,9-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 Oceanis 510 1994 uses Masthead-sloop rigging. The Beneteau Oceanis 510 1994 has a documented auxiliary engine of 80 hp.

For extended cruising, water capacity matters: the Beneteau Oceanis 510 1994 carries 264 gallons versus 169 gallons on the Beneteau Swift Trawler 42 2010 — a significant advantage on longer passages where watermaker or provisioning stops aren't guaranteed.