When two boats share the same hull type — in this case both the Northwood Pontoons Oasis 1823 CR 2010 and the Northwood Pontoons Ultra 2425 2010 are pontoon designs with aluminum 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?
Size is the most obvious dividing line here. The Northwood Pontoons Ultra 2425 2010 measures 24,0 feet overall (2010), giving it roughly 6,0 additional feet of deck space compared to the Northwood Pontoons Oasis 1823 CR 2010 at 18,0 feet (2010). Weight tells a clearer story for trailering families: the Northwood Pontoons Oasis 1823 CR 2010 tips the scales at 135 lbs — 113 lbs more than the Northwood Pontoons Ultra 2425 2010 at 22 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 Northwood Pontoons Ultra 2425 2010 tops out at 150 hp. Engine specs for the Northwood Pontoons Oasis 1823 CR 2010 aren't listed — confirm with a dealer before selecting an outboard.
For family outings this is probably the sharpest distinction between the two. The Northwood Pontoons Ultra 2425 2010 is rated for 14 passengers, while the Northwood Pontoons Oasis 1823 CR 2010 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Northwood Pontoons Ultra 2425 2010 could be the deciding factor.
Bottom line: Choose the Northwood Pontoons Ultra 2425 2010 if your priority is putting more people on the water — it handles 14 passengers and at 24,0 ft it has the deck room to back that rating up comfortably. The Northwood Pontoons Oasis 1823 CR 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 9 that costs less to run day-to-day.