Matching a modified vee Alumacraft Navigator 175 CS 2006 against a flat Alumacraft Sierra 1236 2012 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 Alumacraft Navigator 175 CS 2006 measures 17,0 feet overall (2006), giving it roughly 5,0 additional feet of deck space compared to the Alumacraft Sierra 1236 2012 at 12,0 feet (2012). Weight tells a clearer story for trailering families: the Alumacraft Navigator 175 CS 2006 tips the scales at 1 245 lbs — 1 120 lbs more than the Alumacraft Sierra 1236 2012 at 125 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 Alumacraft Navigator 175 CS 2006 has a 125-hp advantage over the Alumacraft Sierra 1236 2012's 15-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 Alumacraft Navigator 175 CS 2006 is rated for 5 passengers, while the Alumacraft Sierra 1236 2012 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Alumacraft Navigator 175 CS 2006 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Alumacraft Sierra 1236 2012 comes in at 8 lbs per hp versus 9 lbs per hp for the Alumacraft Navigator 175 CS 2006. 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.