When two boats share the same hull type — in this case both the Vectra 2042 OB 2010 and the Vectra 2402 IO 2007 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 — Vectra 2042 OB 2010 at 20,3 ft versus Vectra 2402 IO 2007 at 21,0 ft. Weight tells a clearer story for trailering families: the Vectra 2402 IO 2007 tips the scales at 2 945 lbs — 580 lbs less than the Vectra 2042 OB 2010 at 2 365 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 power gap is worth calling out. Rated to 425 hp, the Vectra 2402 IO 2007 has a 200-hp advantage over the Vectra 2042 OB 2010's 225-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 51 gal and 51 gal — so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Vectra 2402 IO 2007 is rated for 13 passengers, while the Vectra 2042 OB 2010 caps at 12. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Vectra 2402 IO 2007 could be the deciding factor.
Bottom line: Choose the Vectra 2402 IO 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 Vectra 2042 OB 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 12 that costs less to run day-to-day.