The Sealine F42 2012 vs Sealine S390 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.
On paper these two are close siblings in the size department — Sealine F42 2012 at 42,4 ft versus Sealine S390 2021 at 39,4 ft. Weight tells a clearer story for trailering families: the Sealine F42 2012 tips the scales at 51 854 lbs — 28 662 lbs more than the Sealine S390 2021 at 23 192 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 600 hp, the Sealine F42 2012 has a 220-hp advantage over the Sealine S390 2021's 380-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Sealine F42 2012 carries 317 gallons versus 198 gallons in the Sealine S390 2021. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 12 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.
Bottom line: The Sealine F42 2012 at 42,4 ft is the right call if deck space, comfort, and entertaining are top of your list. The Sealine S390 2021 at 39,4 ft wins on trailering ease, likely lower purchase price, and simpler docking — a solid choice for a buyer who wants more boat for less money.