When two boats share the same hull type — in this case both the Supra Launch 21V 2008 and the Supra SA350 2013 are modified vee designs with fiberglass construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
On paper these two are close siblings in the size department — Supra Launch 21V 2008 at 21,0 ft versus Supra SA350 2013 at 22,5 ft. At 34 lbs and 43 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 450 hp, the Supra Launch 21V 2008 has a 105-hp advantage over the Supra SA350 2013's 345-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 4 gal and 5 gal — so range won't be a tiebreaker here.
Both boats are rated for 13 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 Supra Launch 21V 2008 and its 450-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Supra SA350 2013 with its 345-hp rating is the more economical daily driver.