The AB-Inflatables Alumina 13 ALX 2017 vs AB-Inflatables Alumina 16 ALX 2015 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 — AB-Inflatables Alumina 13 ALX 2017 at 13,0 ft versus AB-Inflatables Alumina 16 ALX 2015 at 16,0 ft. Weight tells a clearer story for trailering families: the AB-Inflatables Alumina 16 ALX 2015 tips the scales at 534 lbs — 148 lbs less than the AB-Inflatables Alumina 13 ALX 2017 at 386 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 — 30 hp for the AB-Inflatables Alumina 13 ALX 2017 and 50 hp for the AB-Inflatables Alumina 16 ALX 2015. 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.
For family outings this is probably the sharpest distinction between the two. The AB-Inflatables Alumina 16 ALX 2015 is rated for 4 passengers, while the AB-Inflatables Alumina 13 ALX 2017 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the AB-Inflatables Alumina 16 ALX 2015 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The AB-Inflatables Alumina 16 ALX 2015 comes in at 11 lbs per hp versus 13 lbs per hp for the AB-Inflatables Alumina 13 ALX 2017. 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.
Both the AB-Inflatables Alumina 13 ALX 2017 and AB-Inflatables Alumina 16 ALX 2015 are trailerable, which is a big part of the appeal at this size. You can store either at home, hitch up on a whim, and launch wherever the water looks good.
Bottom line: Choose the AB-Inflatables Alumina 16 ALX 2015 if your priority is putting more people on the water — it handles 4 passengers and at 16,0 ft it has the deck room to back that rating up comfortably. The AB-Inflatables Alumina 13 ALX 2017 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 3 that costs less to run day-to-day.