Matching a inflatable non rigid Zodiac Cadet 310 S 2008 against a inflatable rigid Zodiac Yachtline Deluxe 420 DL 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 Yachtline Deluxe 420 DL 2011 measures 13,8 feet overall (2011), giving it roughly 12,8 additional feet of deck space compared to the Zodiac Cadet 310 S 2008 at 1,0 feet (2008). Weight tells a clearer story for trailering families: the Zodiac Yachtline Deluxe 420 DL 2011 tips the scales at 602 lbs — 509 lbs less than the Zodiac Cadet 310 S 2008 at 93 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 60 hp, the Zodiac Yachtline Deluxe 420 DL 2011 has a 45-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.
For family outings this is probably the sharpest distinction between the two. The Zodiac Yachtline Deluxe 420 DL 2011 is rated for 6 passengers, while the Zodiac Cadet 310 S 2008 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Zodiac Yachtline Deluxe 420 DL 2011 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Zodiac Cadet 310 S 2008 comes in at 6 lbs per hp versus 10 lbs per hp for the Zodiac Yachtline Deluxe 420 DL 2011. 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 37 mph for the Zodiac Yachtline Deluxe 420 DL 2011 and 22 mph for the Zodiac Cadet 310 S 2008.
Bottom line: Choose the Zodiac Yachtline Deluxe 420 DL 2011 if your priority is putting more people on the water — it handles 6 passengers and at 13,8 ft it has the deck room to back that rating up comfortably. The Zodiac Cadet 310 S 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.