Detailed Evaluation & Buyer Recommendation
Zodiac Cadet 310 S 2008 vs Zodiac Open 5.5 PVC 115hp T-Top On Order 2021 — Same Brand, Different Boat
The Zodiac Cadet 310 S 2008 vs Zodiac Open 5.5 PVC 115hp T-Top On Order 2021 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.
The power gap is worth calling out. Rated to 115 hp, the Zodiac Open 5.5 PVC 115hp T-Top On Order 2021 has a 100-hp advantage over the Zodiac Cadet 310 S 2008's 15-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
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.
The Zodiac Cadet 310 S 2008 has a documented top speed of 22 mph. Speed data wasn't available for the other model.
Bottom line: The Zodiac Open 5.5 PVC 115hp T-Top On Order 2021 at 18,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Zodiac Cadet 310 S 2008 at 1,0 ft wins on trailering ease, likely lower purchase price, and simpler docking — a solid choice for a buyer who wants more boat for less money.
General Boat Info
MakeZodiac
Makenot available
ModelCadet 310 S
Modelnot available
Model Year2008
Model Yearnot available
Measurements / Dimensions
Weight - Detail93 lbs. (42 kg)
Weight - Detailnot available
Weight - kg42.18
Weight - kgnot available
Weight - lbs.93
Weight - lbs.not available
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
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 - Detail18.00 ft
Length overall - Meters3.1
Length overall - Meters5.49
Length overall - Inches122
Length overall - Inches216
Body / Hull
Hull materialInflatable
Hull materialnot available
Hull typeInflatable Non Rigid
Hull typenot available
Engine and Drivetrain
Engine/s standard4 hp (3 kW)
Engine/s standardnot available
Drive typeOutboard
Drive typeoutboard
Engine max15 hp (12 kW) Recommended Maximum: 10 hp (8 kW)
Engine maxnot available
Fuel tank capacity - Galnot available
Fuel tank capacity - Gal26
Fuel tank capacity - Litersnot available
Fuel tank capacity - Liters98.42
Engine makenot available
Engine makeYamaha
Horsepowernot available
Horsepower115 hp
Performance
Maximum speed22 mph (36 km/h)
Maximum speednot available
Operational Info
Maximum capacity992 lbs. (450 kg)
Maximum capacitynot available
Maximum people5
Maximum peoplenot available
Boat typenot available
Boat typePower