The Alumacraft Dominator 165 CS 2006 vs Alumacraft Navigator 165 2005 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
On paper these two are close siblings in the size department — Alumacraft Dominator 165 CS 2006 at 16,0 ft versus Alumacraft Navigator 165 2005 at 16,0 ft. Weight tells a clearer story for trailering families: the Alumacraft Dominator 165 CS 2006 tips the scales at 1 175 lbs — 250 lbs more than the Alumacraft Navigator 165 2005 at 925 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 90 hp, the Alumacraft Dominator 165 CS 2006 has a 30-hp advantage over the Alumacraft Navigator 165 2005's 60-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 23 gal and 23 gal — so range won't be a tiebreaker here.
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.
At this size, power-to-weight ratio matters more than outright horsepower. The Alumacraft Dominator 165 CS 2006 comes in at 13 lbs per hp versus 15 lbs per hp for the Alumacraft Navigator 165 2005. 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 Alumacraft Dominator 165 CS 2006 and its 90-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Alumacraft Navigator 165 2005 with its 60-hp rating is the more economical daily driver.