The Azimut Yachts 37 Fly 1991 vs Azimut Yachts 66 Fly 2016 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.
Size is the most obvious dividing line here. The Azimut Yachts 66 Fly 2016 measures 68,3 feet overall (2016), giving it roughly 30,7 additional feet of deck space compared to the Azimut Yachts 37 Fly 1991 at 37,6 feet (1991). Weight tells a clearer story for trailering families: the Azimut Yachts 66 Fly 2016 tips the scales at 90 389 lbs — 80 189 lbs less than the Azimut Yachts 37 Fly 1991 at 10 200 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 1 150 hp, the Azimut Yachts 66 Fly 2016 has a 844-hp advantage over the Azimut Yachts 37 Fly 1991's 306-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Azimut Yachts 66 Fly 2016 carries 1 030 gallons versus 264 gallons in the Azimut Yachts 37 Fly 1991. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Azimut Yachts 66 Fly 2016 is rated for 20 passengers, while the Azimut Yachts 37 Fly 1991 caps at 11. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Azimut Yachts 66 Fly 2016 could be the deciding factor.
Bottom line: Choose the Azimut Yachts 66 Fly 2016 if your priority is putting more people on the water — it handles 20 passengers and at 68,3 ft it has the deck room to back that rating up comfortably. The Azimut Yachts 37 Fly 1991 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 11 that costs less to run day-to-day.