When two boats share the same hull type — in this case both the Duckworth 26 2011 and the Duckworth Navigator Sport 175 2009 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 8,5 additional feet of deck space compared to the Duckworth Navigator Sport 175 2009 at 17,5 feet (2009). At 47 lbs and 14 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.
The power gap is worth calling out. Rated to 500 hp, the Duckworth 26 2011 has a 385-hp advantage over the Duckworth Navigator Sport 175 2009's 115-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Duckworth Navigator Sport 175 2009 carries 42 gallons versus 13 gallons in the Duckworth 26 2011. 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 26 2011 is rated for 7 passengers, while the Duckworth Navigator Sport 175 2009 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Duckworth 26 2011 could be the deciding factor.
Bottom line: Choose the Duckworth 26 2011 if your priority is putting more people on the water — it handles 7 passengers and at 26,0 ft it has the deck room to back that rating up comfortably. The Duckworth Navigator Sport 175 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.