Matching a modified vee Zodiac Bayrunner 550 2013 against a inflatable non rigid Zodiac Cadet Fastroller 325 ACTI-V INT-L 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 Zodiac Bayrunner 550 2013 measures 18,1 feet overall (2013), giving it roughly 7,4 additional feet of deck space compared to the Zodiac Cadet Fastroller 325 ACTI-V INT-L 2012 at 10,7 feet (2012). Weight tells a clearer story for trailering families: the Zodiac Bayrunner 550 2013 tips the scales at 694 lbs — 606 lbs more than the Zodiac Cadet Fastroller 325 ACTI-V INT-L 2012 at 88 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 40 hp, the Zodiac Bayrunner 550 2013 has a 30-hp advantage over the Zodiac Cadet Fastroller 325 ACTI-V INT-L 2012's 10-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 Zodiac Bayrunner 550 2013 is rated for 12 passengers, while the Zodiac Cadet Fastroller 325 ACTI-V INT-L 2012 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Zodiac Bayrunner 550 2013 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Zodiac Cadet Fastroller 325 ACTI-V INT-L 2012 comes in at 9 lbs per hp versus 17 lbs per hp for the Zodiac Bayrunner 550 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.
Top speed is rated at 42 mph for the Zodiac Bayrunner 550 2013 and 23 mph for the Zodiac Cadet Fastroller 325 ACTI-V INT-L 2012.
Both are inflatable designs, which means they pack down for compact storage, can be carried in a bag, and are dramatically lighter than equivalent rigid hulls. The trade-off is setup time and the need to monitor tube pressure regularly. Tube diameter differs: 1 ft. 8 in. (0.5 m) on the Zodiac Bayrunner 550 2013 vs 1 ft. 6 in. (0.45 m) on the Zodiac Cadet Fastroller 325 ACTI-V INT-L 2012 — larger tubes generally mean more buoyancy and a drier, more stable ride.
Bottom line: Choose the Zodiac Bayrunner 550 2013 if your priority is putting more people on the water — it handles 12 passengers and at 18,1 ft it has the deck room to back that rating up comfortably. The Zodiac Cadet Fastroller 325 ACTI-V INT-L 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.