When two boats share the same hull type — in this case both the Alumacraft Competitor 175 Sport 2013 and the Alumacraft Navigator 175 CS 2013 are deep 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 — Alumacraft Competitor 175 Sport 2013 at 17,7 ft versus Alumacraft Navigator 175 CS 2013 at 17,7 ft. Weight tells a clearer story for trailering families: the Alumacraft Competitor 175 Sport 2013 tips the scales at 1 375 lbs — 1 248 lbs more than the Alumacraft Navigator 175 CS 2013 at 127 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.

Both boats share a closely matched power ceiling — 150 hp for the Alumacraft Competitor 175 Sport 2013 and 150 hp for the Alumacraft Navigator 175 CS 2013. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Both carry nearly identical fuel loads — 34 gal and 34 gal — so range won't be a tiebreaker here.

Both boats are rated for 6 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.

At this size, power-to-weight ratio matters more than outright horsepower. The Alumacraft Navigator 175 CS 2013 comes in at 1 lbs per hp versus 9 lbs per hp for the Alumacraft Competitor 175 Sport 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.