Matching a modified vee Bayliner 170 OB 2012 against a deep vee Bayliner 184 SF 2011 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.

On paper these two are close siblings in the size department — Bayliner 170 OB 2012 at 17,5 ft versus Bayliner 184 SF 2011 at 18,0 ft. Weight tells a clearer story for trailering families: the Bayliner 184 SF 2011 tips the scales at 2 643 lbs — 890 lbs less than the Bayliner 170 OB 2012 at 1 753 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 190 hp, the Bayliner 184 SF 2011 has a 65-hp advantage over the Bayliner 170 OB 2012's 125-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Bayliner 184 SF 2011 carries 28 gallons versus 21 gallons in the Bayliner 170 OB 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 Bayliner 184 SF 2011 is rated for 8 passengers, while the Bayliner 170 OB 2012 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Bayliner 184 SF 2011 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Bayliner 184 SF 2011 comes in at 14 lbs per hp versus 14 lbs per hp for the Bayliner 170 OB 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.