Matching a modified vee SeaArk RiverCat 180 CC 2012 against a tunnel SeaArk Tunnel Jon 1872MVT 2008 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.

On paper these two are close siblings in the size department — SeaArk RiverCat 180 CC 2012 at 18,0 ft versus SeaArk Tunnel Jon 1872MVT 2008 at 18,0 ft. Weight tells a clearer story for trailering families: the SeaArk RiverCat 180 CC 2012 tips the scales at 1 193 lbs — 1 118 lbs more than the SeaArk Tunnel Jon 1872MVT 2008 at 75 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 140 hp, the SeaArk RiverCat 180 CC 2012 has a 60-hp advantage over the SeaArk Tunnel Jon 1872MVT 2008's 80-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.

For family outings this is probably the sharpest distinction between the two. The SeaArk Tunnel Jon 1872MVT 2008 is rated for 12 passengers, while the SeaArk RiverCat 180 CC 2012 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the SeaArk Tunnel Jon 1872MVT 2008 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The SeaArk Tunnel Jon 1872MVT 2008 comes in at 1 lbs per hp versus 9 lbs per hp for the SeaArk RiverCat 180 CC 2012. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.