When two boats share the same hull type — in this case both the SeaArk C.U.B. Models 2010 and the SeaArk RiverCat 180 CC 2010 are modified vee 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?
On paper these two are close siblings in the size department — SeaArk C.U.B. Models 2010 at 20,1 ft versus SeaArk RiverCat 180 CC 2010 at 18,0 ft. Weight tells a clearer story for trailering families: the SeaArk RiverCat 180 CC 2010 tips the scales at 1 193 lbs — 1 106 lbs less than the SeaArk C.U.B. Models 2010 at 87 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 SeaArk RiverCat 180 CC 2010 tops out at 140 hp. Engine specs for the SeaArk C.U.B. Models 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 SeaArk RiverCat 180 CC 2010 is rated for 10 passengers, while the SeaArk C.U.B. Models 2010 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the SeaArk RiverCat 180 CC 2010 could be the deciding factor.
Bottom line: Choose the SeaArk RiverCat 180 CC 2010 if your priority is putting more people on the water — it handles 10 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The SeaArk C.U.B. Models 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.