The Supra Launch 20 SSV 2007 vs Supra Launch 21 V 2007 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 Supra Launch 21 V 2007 measures 21,0 feet overall (2007), giving it roughly 19,0 additional feet of deck space compared to the Supra Launch 20 SSV 2007 at 2,0 feet (2007). At 32 lbs and 34 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.
Both boats share a closely matched power ceiling — 340 hp for the Supra Launch 20 SSV 2007 and 340 hp for the Supra Launch 21 V 2007. 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. Both carry nearly identical fuel loads — 4 gal and 4 gal — so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Supra Launch 21 V 2007 is rated for 13 passengers, while the Supra Launch 20 SSV 2007 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Supra Launch 21 V 2007 could be the deciding factor.
Bottom line: Choose the Supra Launch 21 V 2007 if your priority is putting more people on the water — it handles 13 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Supra Launch 20 SSV 2007 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.