Matching a tunnel Shallow Sport 18 ft. Classic 2013 against a tri-hull Shallow Sport X3 25 ft. 2013 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 Shallow Sport X3 25 ft. 2013 measures 25,4 feet overall (2013), giving it roughly 7,0 additional feet of deck space compared to the Shallow Sport 18 ft. Classic 2013 at 18,4 feet (2013). At 75 lbs and 25 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The Shallow Sport 18 ft. Classic 2013 carries a rated maximum of 150 hp. Engine data for the Shallow Sport X3 25 ft. 2013 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Shallow Sport 18 ft. Classic 2013 carries 43 gallons versus 6 gallons in the Shallow Sport X3 25 ft. 2013. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Shallow Sport X3 25 ft. 2013 is rated for 7 passengers, while the Shallow Sport 18 ft. Classic 2013 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Shallow Sport X3 25 ft. 2013 could be the deciding factor.
Bottom line: Choose the Shallow Sport X3 25 ft. 2013 if your priority is putting more people on the water — it handles 7 passengers and at 25,4 ft it has the deck room to back that rating up comfortably. The Shallow Sport 18 ft. Classic 2013 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.