The Supra Launch LTS 2005 vs Supra Sunsport 21V 2013 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 - Supra Launch LTS 2005 at 19,0 ft versus Supra Sunsport 21V 2013 at 21,3 ft. Weight tells a clearer story for trailering families: the Supra Sunsport 21V 2013 tips the scales at 3 500 lbs - 600 lbs less than the Supra Launch LTS 2005 at 2 900 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 Supra Sunsport 21V 2013 tops out at 345 hp. Engine specs for the Supra Launch LTS 2005 aren't listed - confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Supra Sunsport 21V 2013 carries 50 gallons versus 34 gallons in the Supra Launch LTS 2005. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Supra Sunsport 21V 2013 is rated for 12 passengers, while the Supra Launch LTS 2005 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Supra Sunsport 21V 2013 could be the deciding factor.
Bottom line: Choose the Supra Sunsport 21V 2013 if your priority is putting more people on the water - it handles 12 passengers and at 21,3 ft it has the deck room to back that rating up comfortably. The Supra Launch LTS 2005 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 10 that costs less to run day-to-day.