When two boats share the same hull type — in this case both the Zodiac Pro 15 Man 2012 and the Zodiac Pro Open 650 2011 are inflatable rigid designs with fiberglass construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
On paper these two are close siblings in the size department — Zodiac Pro 15 Man 2012 at 20,7 ft versus Zodiac Pro Open 650 2011 at 21,3 ft. Weight tells a clearer story for trailering families: the Zodiac Pro Open 650 2011 tips the scales at 1 477 lbs — 220 lbs less than the Zodiac Pro 15 Man 2012 at 1 257 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 2011 has a 25-hp advantage over the Zodiac Pro 15 Man 2012's 150-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Zodiac Pro 15 Man 2012 carries 48 gallons versus 32 gallons in the Zodiac Pro Open 650 2011. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
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 Pro Open 650 2011 comes in at 8 lbs per hp versus 8 lbs per hp for the Zodiac Pro 15 Man 2012. 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 53 mph for the Zodiac Pro 15 Man 2012 and 48 mph for the Zodiac Pro Open 650 2011.
The Zodiac Pro 15 Man 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 2011 is a rigid hull, which typically offers a more confident ride in chop and easier maintenance over the long term.
Bottom line: Performance buyers should lean toward the Zodiac Pro Open 650 2011 and its 175-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Zodiac Pro 15 Man 2012 with its 150-hp rating is the more economical daily driver.