The Bayliner 180 OB 2012 is a modified-V design and the Bayliner 315 Cruiser 2013 is a deep-V design, so you're likely deciding between two noticeably 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 Bayliner 315 Cruiser 2013 measures 30,5 feet overall (2013), giving it roughly 12,5 additional feet of deck space compared to the Bayliner 180 OB 2012 at 18,0 feet (2012). Weight tells a clearer story for trailering families: the Bayliner 315 Cruiser 2013 tips the scales at 9 098 lbs - 7 220 lbs less than the Bayliner 180 OB 2012 at 1 878 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 Bayliner 180 OB 2012 carries a rated maximum of 125 hp. Engine data for the Bayliner 315 Cruiser 2013 wasn't available in our records - check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Bayliner 315 Cruiser 2013 carries 120 gallons versus 23 gallons in the Bayliner 180 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 315 Cruiser 2013 is rated for 9 passengers, while the Bayliner 180 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 315 Cruiser 2013 could be the deciding factor.