When two boats share the same hull type — in this case both the Duckworth Offshore 28 2012 and the Duckworth Ultra Magnum Inboard Jet 22 2013 are deep vee designs with aluminum 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?
Size is the most obvious dividing line here. The Duckworth Ultra Magnum Inboard Jet 22 2013 measures 22,0 feet overall (2013), giving it roughly 19,0 additional feet of deck space compared to the Duckworth Offshore 28 2012 at 3,0 feet (2012). Weight tells a clearer story for trailering families: the Duckworth Ultra Magnum Inboard Jet 22 2013 tips the scales at 331 lbs — 280 lbs less than the Duckworth Offshore 28 2012 at 51 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 Duckworth Offshore 28 2012 carries a rated maximum of 5 hp. Engine data for the Duckworth Ultra Magnum Inboard Jet 22 2013 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Duckworth Offshore 28 2012 carries 175 gallons versus 62 gallons in the Duckworth Ultra Magnum Inboard Jet 22 2013. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Duckworth Offshore 28 2012 is rated for 9 passengers, while the Duckworth Ultra Magnum Inboard Jet 22 2013 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Duckworth Offshore 28 2012 could be the deciding factor.
Bottom line: Choose the Duckworth Offshore 28 2012 if your priority is putting more people on the water — it handles 9 passengers and at 3,0 ft it has the deck room to back that rating up comfortably. The Duckworth Ultra Magnum Inboard Jet 22 2013 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.