When two boats share the same hull type — in this case both the Duckworth 26 2011 and the Duckworth Offshore 28 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 26 2011 measures 26,0 feet overall (2011), giving it roughly 23,0 additional feet of deck space compared to the Duckworth Offshore 28 2013 at 3,0 feet (2013). At 47 lbs and 51 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
Both boats share a closely matched power ceiling — 500 hp for the Duckworth 26 2011 and 500 hp for the Duckworth Offshore 28 2013. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Both carry nearly identical fuel loads — 13 gal and 13 gal — so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Duckworth Offshore 28 2013 is rated for 9 passengers, while the Duckworth 26 2011 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Duckworth Offshore 28 2013 could be the deciding factor.
Bottom line: Choose the Duckworth Offshore 28 2013 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 26 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.