The Sealine S390 2021 vs Sealine SC42 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.
On paper these two are close siblings in the size department — Sealine S390 2021 at 39,4 ft versus Sealine SC42 2011 at 42,0 ft. Weight tells a clearer story for trailering families: the Sealine SC42 2011 tips the scales at 24 250 lbs — 1 058 lbs less 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.
Both boats share a closely matched power ceiling — 380 hp for the Sealine S390 2021 and 370 hp for the Sealine SC42 2011. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Fuel capacity breaks the other way: the Sealine SC42 2011 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 SC42 2011 at 42,0 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.