When two boats share the same hull type — in this case both the Marathon DN 12 Utility V 2010 and the Marathon DN 16SC 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 Marathon DN 16SC 2009 measures 16,0 feet overall (2009), giving it roughly 4,3 additional feet of deck space compared to the Marathon DN 12 Utility V 2010 at 11,7 feet (2010). At 121 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.
The power gap is worth calling out. Rated to 50 hp, the Marathon DN 16SC 2009 has a 40-hp advantage over the Marathon DN 12 Utility V 2010's 10-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 Marathon DN 16SC 2009 is rated for 5 passengers, while the Marathon DN 12 Utility V 2010 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Marathon DN 16SC 2009 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Marathon DN 16SC 2009 comes in at 1 lbs per hp versus 12 lbs per hp for the Marathon DN 12 Utility V 2010. 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.
Bottom line: Choose the Marathon DN 16SC 2009 if your priority is putting more people on the water — it handles 5 passengers and at 16,0 ft it has the deck room to back that rating up comfortably. The Marathon DN 12 Utility V 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 3 that costs less to run day-to-day.