When two boats share the same hull type — in this case both the Sylvan Alaskan 15 DLX 2011 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 Alaskan 15 DLX 2011 at 14,9 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 — 1 298 lbs less than the Sylvan Alaskan 15 DLX 2011 at 27 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 140 hp, the Sylvan Expedition Sport 1700 DC 2012 has a 105-hp advantage over the Sylvan Alaskan 15 DLX 2011's 35-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 Sylvan Expedition Sport 1700 DC 2012 is rated for 6 passengers, while the Sylvan Alaskan 15 DLX 2011 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sylvan Expedition Sport 1700 DC 2012 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Sylvan Alaskan 15 DLX 2011 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.