The Beneteau First 18 SE 2018 vs Beneteau First 45F5 1990 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 First 45F5 1990 measures 46,7 feet overall (1990), giving it roughly 28,4 additional feet of deck space compared to the Beneteau First 18 SE 2018 at 18,3 feet (2018). Weight tells a clearer story for trailering families: the Beneteau First 45F5 1990 tips the scales at 23 149 lbs — 22 047 lbs less than the Beneteau First 18 SE 2018 at 1 102 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 45F5 1990 tops out at 50 hp. Engine specs for the Beneteau First 18 SE 2018 aren't listed — confirm with a dealer before selecting an outboard.
For family outings this is probably the sharpest distinction between the two. The Beneteau First 45F5 1990 is rated for 14 passengers, while the Beneteau First 18 SE 2018 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Beneteau First 45F5 1990 could be the deciding factor.
Displacement is where these two sailboats genuinely part ways. The Beneteau First 45F5 1990 displaces 23 149 lbs — a 22 047-lb difference over the Beneteau First 18 SE 2018 at 1 102 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.
Both boats draw a similar depth — 7,0 ft and 7,1 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.
The Beneteau First 45F5 1990 has a documented auxiliary engine of 50 hp.
The Beneteau First 18 SE 2018 is trailerable, giving it a significant lifestyle advantage for sailors who want to move between lakes, rivers, and coastal waters without committing to a marina slip.
Bottom line: The Beneteau First 45F5 1990 is the offshore and bluewater choice — at 23 149 lbs displacement and 47 ft it has the load capacity, range, and seakeeping for extended passages. The Beneteau First 18 SE 2018 at 1 102 lbs is the more nimble, accessible option and is trailerable — easier to single-hand and better suited to coastal and inland sailing.