When two boats share the same hull type — in this case both the Key West 1720 CC 2013 and the Key West 177 SK 2012 are modified vee designs with fiberglass 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 — Key West 1720 CC 2013 at 17,2 ft versus Key West 177 SK 2012 at 17,3 ft. Weight tells a clearer story for trailering families: the Key West 1720 CC 2013 tips the scales at 115 lbs — 104 lbs more than the Key West 177 SK 2012 at 11 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 120 hp, the Key West 1720 CC 2013 has a 30-hp advantage over the Key West 177 SK 2012's 90-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Key West 1720 CC 2013 carries 31 gallons versus 19 gallons in the Key West 177 SK 2012. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
The Key West 1720 CC 2013 is rated for up to 5 people. Passenger data for the Key West 177 SK 2012 wasn't available.
At this size, power-to-weight ratio matters more than outright horsepower. The Key West 177 SK 2012 comes in at 0 lbs per hp versus 1 lbs per hp for the Key West 1720 CC 2013. 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: Performance buyers should lean toward the Key West 1720 CC 2013 and its 120-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Key West 177 SK 2012 with its 90-hp rating is the more economical daily driver.