Matching a modified vee Riviera Yachts 51 Enclosed Flybridge SII 2010 against a deep vee Riviera Yachts 51 Open Flybridge SII 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 — Riviera Yachts 51 Enclosed Flybridge SII 2010 at 54,7 ft versus Riviera Yachts 51 Open Flybridge SII 2011 at 54,7 ft. At 4 806 lbs and 4 806 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.

Both boats share a closely matched power ceiling — 825 hp for the Riviera Yachts 51 Enclosed Flybridge SII 2010 and 825 hp for the Riviera Yachts 51 Open Flybridge SII 2011. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Both carry nearly identical fuel loads — 977 gal and 977 gal — so range won't be a tiebreaker here.

Both boats are rated for 16 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.