Matching a inflatable non rigid Zodiac Cadet Solid 340 2012 against a inflatable rigid Zodiac Pro Open 650 2010 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 650 2010 measures 21,3 feet overall (2010), giving it roughly 10,2 additional feet of deck space compared to the Zodiac Cadet Solid 340 2012 at 11,2 feet (2012). Weight tells a clearer story for trailering families: the Zodiac Pro Open 650 2010 tips the scales at 1 477 lbs — 1 362 lbs less than the Zodiac Cadet Solid 340 2012 at 115 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 175 hp, the Zodiac Pro Open 650 2010 has a 155-hp advantage over the Zodiac Cadet Solid 340 2012's 20-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.
At this size, power-to-weight ratio matters more than outright horsepower. The Zodiac Cadet Solid 340 2012 comes in at 6 lbs per hp versus 8 lbs per hp for the Zodiac Pro Open 650 2010. 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 48 mph for the Zodiac Pro Open 650 2010 and 28 mph for the Zodiac Cadet Solid 340 2012.
The Zodiac Cadet Solid 340 2012 is an inflatable design — lighter, easier to store, and quicker to launch from a beach or dock without a slipway. The Zodiac Pro Open 650 2010 is a rigid hull, which typically offers a more confident ride in chop and easier maintenance over the long term.
Bottom line: The Zodiac Pro Open 650 2010 at 21,3 ft is the right call if deck space, comfort, and entertaining are top of your list. The Zodiac Cadet Solid 340 2012 at 11,2 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.