Detailed Evaluation & Buyer Recommendation
Zodiac Cadet Fastroller 310 FR Acti-V INT-L 2008 vs Zodiac Pro Open 550 2011 — Same Brand, Different Boat
Matching a inflatable non rigid Zodiac Cadet Fastroller 310 FR Acti-V INT-L 2008 against a inflatable rigid Zodiac Pro Open 550 2011 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 Pro Open 550 2011 measures 18,1 feet overall (2011), giving it roughly 17,1 additional feet of deck space compared to the Zodiac Cadet Fastroller 310 FR Acti-V INT-L 2008 at 1,0 feet (2008). Weight tells a clearer story for trailering families: the Zodiac Pro Open 550 2011 tips the scales at 882 lbs — 811 lbs less than the Zodiac Cadet Fastroller 310 FR Acti-V INT-L 2008 at 71 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 120 hp, the Zodiac Pro Open 550 2011 has a 110-hp advantage over the Zodiac Cadet Fastroller 310 FR Acti-V INT-L 2008'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 Pro Open 550 2011 is rated for 11 passengers, while the Zodiac Cadet Fastroller 310 FR Acti-V INT-L 2008 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Zodiac Pro Open 550 2011 could be the deciding factor.
Bottom line: Choose the Zodiac Pro Open 550 2011 if your priority is putting more people on the water — it handles 11 passengers and at 18,1 ft it has the deck room to back that rating up comfortably. The Zodiac Cadet Fastroller 310 FR Acti-V INT-L 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.
General Boat Info
ModelCadet Fastroller 310 FR Acti-V INT-L
ModelPro Open 55
Model Year2008
Model Year2011
Measurements / Dimensions
Weight - Detail71 lbs. (32 kg)
Weight - Detail882 lbs. (440 kg)
Weight - kg32.21
Weight - kg400.07
Weight - lbs.71
Weight - lbs.882
Width [transom] - Detail5 ft. 3 in. (1.6 m) Inside Width: 2 ft. 4 in. (.7 m)
Width [transom] - Detailnot available
Length - Meters3.1
Length - Metersnot available
Length - Feet1
Length - Feet18.08
Length - Inches2
Length - Inchesnot available
Length overall - Detail10 ft. 2 in. (3.1 m) Inside Length: 7 ft. 1 in. (2.17 m)
Length overall - Detail18 ft. 1 in. (5.5 m)
Length overall - Meters3.1
Length overall - Meters5.51
Length overall - Inches122
Length overall - Inches217
Beamnot available
Beam8 ft. 2 in. (2.5 m)
Beam - Metersnot available
Beam - Meters2.49
Beam - Inchesnot available
Beam - Inches98
Body / Hull
Hull materialInflatable
Hull materialFiberglass
Hull typeInflatable Non Rigid
Hull typeInflatable Rigid
Engine and Drivetrain
Engine/s standard4 hp (3 kW)
Engine/s standardnot available
Drive typeOutboard
Drive typeOutboard
Engine max10 hp (8 kW) Recommended Maximum: 8 hp (6 kW)
Engine max120 hp (90 kW)
Fuel tank capacity - Detailnot available
Fuel tank capacity - Detail21.9 gal (831 l)
Fuel tank capacity - Litersnot available
Fuel tank capacity - Liters83.28
Fuel tank capacity - Galnot available
Fuel tank capacity - Gal21.9
Performance
Maximum speed23 mph (37 km/h)
Maximum speed45 mph (72 km/h)
Operational Info
Maximum capacity992 lbs. (450 kg)
Maximum capacity3,197 lbs. (1,450 kg)
Maximum people4
Maximum people11
Pontoon and Inflatable Specific
Tube diameternot available
Tube diameter1 ft. 11 in. (0.575 m)