When two boats share the same hull type — in this case both the Sylvan Adventurer 1900 DC 2007 and the Sylvan Expedition Sport 1700 DC 2012 are modified 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?
On paper these two are close siblings in the size department — Sylvan Adventurer 1900 DC 2007 at 18,0 ft versus Sylvan Expedition Sport 1700 DC 2012 at 17,1 ft. Weight tells a clearer story for trailering families: the Sylvan Expedition Sport 1700 DC 2012 tips the scales at 1 325 lbs — 1 179 lbs less than the Sylvan Adventurer 1900 DC 2007 at 146 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 power gap is worth calling out. Rated to 175 hp, the Sylvan Adventurer 1900 DC 2007 has a 35-hp advantage over the Sylvan Expedition Sport 1700 DC 2012's 140-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Sylvan Adventurer 1900 DC 2007 carries 31 gallons versus 24 gallons in the Sylvan Expedition Sport 1700 DC 2012. 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 Sylvan Adventurer 1900 DC 2007 is rated for 8 passengers, while the Sylvan Expedition Sport 1700 DC 2012 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sylvan Adventurer 1900 DC 2007 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Sylvan Adventurer 1900 DC 2007 comes in at 1 lbs per hp versus 10 lbs per hp for the Sylvan Expedition Sport 1700 DC 2012. 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 Sylvan Adventurer 1900 DC 2007 if your priority is putting more people on the water — it handles 8 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The Sylvan Expedition Sport 1700 DC 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.