Matching a modified vee Duckworth 723 2011 against a deep vee Duckworth Navigator Sport 18 2013 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 Duckworth 723 2011 measures 23,0 feet overall (2011), giving it roughly 4,8 additional feet of deck space compared to the Duckworth Navigator Sport 18 2013 at 18,3 feet (2013). Weight tells a clearer story for trailering families: the Duckworth Navigator Sport 18 2013 tips the scales at 142 lbs — 125 lbs less than the Duckworth 723 2011 at 17 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 Navigator Sport 18 2013 tops out at 115 hp. Engine specs for the Duckworth 723 2011 aren't listed — confirm with a dealer before selecting an outboard.Both carry nearly identical fuel loads — 42 gal and 42 gal — so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Duckworth 723 2011 is rated for 7 passengers, while the Duckworth Navigator Sport 18 2013 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Duckworth 723 2011 could be the deciding factor.
Bottom line: Choose the Duckworth 723 2011 if your priority is putting more people on the water — it handles 7 passengers and at 23,0 ft it has the deck room to back that rating up comfortably. The Duckworth Navigator Sport 18 2013 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.