The Century Boats 1701 Inshore 2013 is a deep-V design and the Century Boats 1900 Inshore 2009 is a modified-V design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
On paper these two are close siblings in the size department - Century Boats 1701 Inshore 2013 at 17,2 ft versus Century Boats 1900 Inshore 2009 at 19,5 ft. Weight tells a clearer story for trailering families: the Century Boats 1900 Inshore 2009 tips the scales at 2 000 lbs - 900 lbs less than the Century Boats 1701 Inshore 2013 at 1 100 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 150 hp, the Century Boats 1900 Inshore 2009 has a 35-hp advantage over the Century Boats 1701 Inshore 2013's 115-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Century Boats 1900 Inshore 2009 carries 52 gallons versus 24 gallons in the Century Boats 1701 Inshore 2013. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
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: The Century Boats 1900 Inshore 2009 at 19,5 ft is the right call if deck space, comfort, and entertaining are top of your list. The Century Boats 1701 Inshore 2013 at 17,2 ft wins on trailering ease, likely lower purchase price, and simpler docking - a solid choice for a buyer who wants more boat for less money.