Matching a tunnel SeaArk 2072 Tunnel Pro (CC) 2013 against a modified vee SeaArk Forecast 170C 2011 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.
Size is the most obvious dividing line here. The SeaArk 2072 Tunnel Pro (CC) 2013 measures 20,1 feet overall (2013), giving it roughly 3,1 additional feet of deck space compared to the SeaArk Forecast 170C 2011 at 17,0 feet (2011). Weight tells a clearer story for trailering families: the SeaArk Forecast 170C 2011 tips the scales at 775 lbs — 691 lbs less than the SeaArk 2072 Tunnel Pro (CC) 2013 at 84 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 2072 Tunnel Pro (CC) 2013 has a 65-hp advantage over the SeaArk Forecast 170C 2011's 75-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 2072 Tunnel Pro (CC) 2013 is rated for 6 passengers, while the SeaArk Forecast 170C 2011 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the SeaArk 2072 Tunnel Pro (CC) 2013 could be the deciding factor.
Bottom line: Choose the SeaArk 2072 Tunnel Pro (CC) 2013 if your priority is putting more people on the water — it handles 6 passengers and at 20,1 ft it has the deck room to back that rating up comfortably. The SeaArk Forecast 170C 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.