When two boats share the same hull type — in this case both the SeaArk 1660MV Super Jon 2013 and the SeaArk Forecast 170C 2012 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 1660MV Super Jon 2013 at 16,0 ft versus SeaArk Forecast 170C 2012 at 17,0 ft. Weight tells a clearer story for trailering families: the SeaArk Forecast 170C 2012 tips the scales at 775 lbs — 300 lbs less than the SeaArk 1660MV Super Jon 2013 at 475 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 75 hp, the SeaArk Forecast 170C 2012 has a 25-hp advantage over the SeaArk 1660MV Super Jon 2013's 50-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 Forecast 170C 2012 is rated for 5 passengers, while the SeaArk 1660MV Super Jon 2013 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the SeaArk Forecast 170C 2012 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The SeaArk 1660MV Super Jon 2013 comes in at 10 lbs per hp versus 10 lbs per hp for the SeaArk Forecast 170C 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.