The SeaArk 1860 MVTPD 2005 vs SeaArk 1872MVT 2006 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
On paper these two are close siblings in the size department — SeaArk 1860 MVTPD 2005 at 18,0 ft versus SeaArk 1872MVT 2006 at 18,0 ft. Weight tells a clearer story for trailering families: the SeaArk 1860 MVTPD 2005 tips the scales at 615 lbs — 540 lbs more than the SeaArk 1872MVT 2006 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.
Both boats share a closely matched power ceiling — 60 hp for the SeaArk 1860 MVTPD 2005 and 80 hp for the SeaArk 1872MVT 2006. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup.
For family outings this is probably the sharpest distinction between the two. The SeaArk 1872MVT 2006 is rated for 12 passengers, while the SeaArk 1860 MVTPD 2005 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the SeaArk 1872MVT 2006 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The SeaArk 1872MVT 2006 comes in at 1 lbs per hp versus 10 lbs per hp for the SeaArk 1860 MVTPD 2005. 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.
Bottom line: Choose the SeaArk 1872MVT 2006 if your priority is putting more people on the water — it handles 12 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The SeaArk 1860 MVTPD 2005 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.