The Sealine C390 2021 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 C390 2021 at 39,4 ft versus Sealine S390 2021 at 39,4 ft. At 23 192 lbs and 23 192 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 380 hp, the Sealine S390 2021 has a 60-hp advantage over the Sealine C390 2021's 320-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 198 gal and 198 gal — so range won't be a tiebreaker here.
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: Performance buyers should lean toward the Sealine S390 2021 and its 380-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Sealine C390 2021 with its 320-hp rating is the more economical daily driver.