The Dehler 25 Fin Keel 1984 vs Dehler 46SQ 2020 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 Dehler 46SQ 2020 measures 49,0 feet overall (2020), giving it roughly 24,9 additional feet of deck space compared to the Dehler 25 Fin Keel 1984 at 24,1 feet (1984). Weight tells a clearer story for trailering families: the Dehler 46SQ 2020 tips the scales at 25 352 lbs — 22 927 lbs less than the Dehler 25 Fin Keel 1984 at 2 425 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 80 hp, the Dehler 46SQ 2020 has a 71-hp advantage over the Dehler 25 Fin Keel 1984's 9-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Dehler 46SQ 2020 is rated for 14 passengers, while the Dehler 25 Fin Keel 1984 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Dehler 46SQ 2020 could be the deciding factor.
Displacement is where these two sailboats genuinely part ways. The Dehler 46SQ 2020 displaces 25 352 lbs — a 22 927-lb difference over the Dehler 25 Fin Keel 1984 at 2 425 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 Dehler 46SQ 2020 draws 7,5 ft, compared to 4,4 ft for the Dehler 25 Fin Keel 1984. That 3,1-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 Dehler 25 Fin Keel 1984 uses Sloop rigging. For auxiliary power the Dehler 46SQ 2020 carries a 80-hp engine against 9 hp on the Dehler 25 Fin Keel 1984. Motoring range and ability to punch through a foul current or enter a tight marina under power will favour the more powerful installation.
The Dehler 25 Fin Keel 1984 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 Dehler 46SQ 2020 is the offshore and bluewater choice — at 25 352 lbs displacement and 49 ft it has the load capacity, range, and seakeeping for extended passages. The Dehler 25 Fin Keel 1984 at 2 425 lbs is the more nimble, accessible option and is trailerable — easier to single-hand and better suited to coastal and inland sailing.