Riviera Yachts 51 Enclosed Flybridge SII 2009 boat specs
Riviera Yachts
Riviera Yachts 51 Enclosed Flybridge SII 2009
2009
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Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 boat specs
Riviera Yachts
Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012
2012
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Riviera Yachts 51 Enclosed Flybridge SII 2009 vs Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 — Same Brand, Different Boat

Matching a modified vee Riviera Yachts 51 Enclosed Flybridge SII 2009 against a deep vee Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 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.

Size is the most obvious dividing line here. The Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 measures 80,3 feet overall (2012), giving it roughly 26,3 additional feet of deck space compared to the Riviera Yachts 51 Enclosed Flybridge SII 2009 at 54,0 feet (2009). Weight tells a clearer story for trailering families: the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 tips the scales at 92 418 lbs — 87 612 lbs less than the Riviera Yachts 51 Enclosed Flybridge SII 2009 at 4 806 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 1 572 hp, the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 has a 747-hp advantage over the Riviera Yachts 51 Enclosed Flybridge SII 2009's 825-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Riviera Yachts 51 Enclosed Flybridge SII 2009 carries 977 gallons versus 238 gallons in the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 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 Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 is rated for 23 passengers, while the Riviera Yachts 51 Enclosed Flybridge SII 2009 caps at 16. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 could be the deciding factor.

Bottom line: Choose the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 if your priority is putting more people on the water — it handles 23 passengers and at 80,3 ft it has the deck room to back that rating up comfortably. The Riviera Yachts 51 Enclosed Flybridge SII 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 16 that costs less to run day-to-day.
General Boat Info
MakeRiviera Yachts
MakeRiviera Yachts
Model51 Enclosed Flybridge SII
Model75 Enclosed Flybridge Shaft Drive
Model Year2009
Model Year2012
Measurements / Dimensions
Beam16 ft. 2 in. (4.93 m) including gunwale
Beam20 ft. 9 in. (6.32 m)
Beam - Meters4.93
Beam - Meters6.32
Beam - Inches194
Beam - Inches249
Draft [max] - Detail4 ft. 6 in. (1.38 m) including props
Draft [max] - Detail5 ft. 7 in. (1.7 m)
Draft [max] - Meters1.37
Draft [max] - Meters1.7
Draft [max] - Inches54
Draft [max] - Inches67
Weight - Detail48,060 lbs. (21,800 kg)
Weight - Detail92,418 lbs. (41,920 kg)
Weight - kg21799.63
Weight - kg41920.07
Weight - lbs.4806
Weight - lbs.92418
Length - Meters16.67
Length - Metersnot available
Length - Feet54
Length - Feet80.25
Length - Inches8
Length - Inchesnot available
Length [over all with swim platform]58 ft. 2 in. (17.73 m)
Length [over all with swim platform]80 ft. 3 in. (24.48 m)
Length overall - Detail54 ft. 8 in. (16.67 m)
Length overall - Detail75 ft. 6 in. (23.07 m)
Length overall - Meters16.66
Length overall - Meters23.01
Length overall - Inches656
Length overall - Inches906
Body / Hull
Hull materialFiberglass
Hull materialFiberglass
Hull typeModified Vee
Hull typeDeep Vee
Engine and Drivetrain
Engine/s standard(2) MTU
Engine/s standard(2) Catepillar C32
Fuel tank capacity - Detail977 gal. (3,700 l)
Fuel tank capacity - Detail2,380 gal. (9,000 l)
Fuel tank capacity - Liters3698.35
Fuel tank capacity - Liters9009.28
Fuel tank capacity - Gal977
Fuel tank capacity - Gal238
Fuel typeDiesel
Fuel typeGas
Drive typeInboard - Twin
Drive typenot available
Horsepower825 hp (615 kW) each
Horsepowernot available
Engine maxnot available
Engine max1,572 hp (1,156 kW) each
Operational Info
Sleeping capacity6 - 8
Sleeping capacity10-14
Water capacity227 gal. (860 l)
Water capacity264 gal. (1,000 l)
Holding tank capacity - Detail40 gal. (151 l)
Holding tank capacity - Detail132 gal. (500 l)
Holding tank capacity - Liters151.42
Holding tank capacity - Liters499.67
Holding tank capacity - Gal4
Holding tank capacity - Gal132

Riviera Yachts 51 Enclosed Flybridge SII 2009 vs Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 — Common Questions

Which is the larger boat — the Riviera Yachts 51 Enclosed Flybridge SII 2009 or the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012?
The Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 is the longer of the two at 80,3 feet overall. The Riviera Yachts 51 Enclosed Flybridge SII 2009 comes in at 54,0 feet, making it roughly 26,3 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Riviera Yachts 51 Enclosed Flybridge SII 2009 or the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012?
For trailering, the Riviera Yachts 51 Enclosed Flybridge SII 2009 has the edge at 4 806 lbs dry weight versus 92 418 lbs for the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012. Add a motor (typically 300–500 lbs for an outboard in this class), gear, and a partial fuel load and the difference grows. Lighter is friendlier on smaller tow vehicles and on fuel economy while hauling.
Which boat can handle a bigger outboard?
The Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 is rated to a maximum of 1 572 hp, giving it the larger power ceiling. The Riviera Yachts 51 Enclosed Flybridge SII 2009 tops out at 825 hp. Keep in mind that maximum ratings are just that — matching the motor to the actual load and usage pattern usually matters more than chasing the ceiling.
How many people can each boat hold?
The Riviera Yachts 51 Enclosed Flybridge SII 2009 is Coast Guard rated for 16 passengers, while the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 is certified for 23. Note that legal capacity and comfortable capacity aren't always the same thing — on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.
Which boat is wider, and does it affect trailering?
The Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 measures 249" wide, compared to 194" for the Riviera Yachts 51 Enclosed Flybridge SII 2009. The US standard-width towing limit is 8’6" (102") in most states — anything over that may need a wide-load permit. Confirm your specific route requirements with each state's DOT.
Which boat has the larger fuel tank — the Riviera Yachts 51 Enclosed Flybridge SII 2009 or the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012?
The Riviera Yachts 51 Enclosed Flybridge SII 2009 has the bigger tank at 977 gallons, versus 238 gallons on the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012. That 739-gallon difference translates to roughly 2217–3695 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Riviera Yachts 51 Enclosed Flybridge SII 2009 and Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 from the same manufacturer?
Yes — both the Riviera Yachts 51 Enclosed Flybridge SII 2009 and the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 are built by Riviera Yachts. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.