When two boats share the same hull type — in this case both the SeaArk 1872 Pro (CC) 2012 and the SeaArk RXV 186 2013 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 1872 Pro (CC) 2012 at 18,0 ft versus SeaArk RXV 186 2013 at 18,5 ft. Weight tells a clearer story for trailering families: the SeaArk 1872 Pro (CC) 2012 tips the scales at 875 lbs — 866 lbs more than the SeaArk RXV 186 2013 at 9 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 130 hp, the SeaArk 1872 Pro (CC) 2012 has a 40-hp advantage over the SeaArk RXV 186 2013's 90-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
Both boats are rated for 5 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Bottom line: Performance buyers should lean toward the SeaArk 1872 Pro (CC) 2012 and its 130-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the SeaArk RXV 186 2013 with its 90-hp rating is the more economical daily driver.