Riviera Belize 54 Daybridge 2021 boat specs
Riviera Yachts
Riviera Belize 54 Daybridge 2021
2021
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VS
Riviera Yachts 51 Open Flybridge SII 2009 boat specs
Riviera Yachts
Riviera Yachts 51 Open Flybridge SII 2009
2009
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Riviera Belize 54 Daybridge 2021 vs Riviera Yachts 51 Open Flybridge SII 2009 — Same Brand, Different Boat

The Riviera Belize 54 Daybridge 2021 vs Riviera Yachts 51 Open Flybridge SII 2009 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.

On paper these two are close siblings in the size department — Riviera Belize 54 Daybridge 2021 at 54,2 ft versus Riviera Yachts 51 Open Flybridge SII 2009 at 54,0 ft. Weight tells a clearer story for trailering families: the Riviera Belize 54 Daybridge 2021 tips the scales at 48 281 lbs — 43 475 lbs more than the Riviera Yachts 51 Open 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 825 hp, the Riviera Yachts 51 Open Flybridge SII 2009 has a 100-hp advantage over the Riviera Belize 54 Daybridge 2021's 725-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 Open Flybridge SII 2009 carries 977 gallons versus 793 gallons in the Riviera Belize 54 Daybridge 2021. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

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.

Bottom line: Performance buyers should lean toward the Riviera Yachts 51 Open Flybridge SII 2009 and its 825-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Riviera Belize 54 Daybridge 2021 with its 725-hp rating is the more economical daily driver.
Measurements / Dimensions
Length overall - Detail54.20 ft
Length overall - Detail54 ft. 8 in. (16.67 m)
Length - Feet54.2
Length - Feet54
Length overall - Meters16.52
Length overall - Meters16.66
Length overall - Inches650
Length overall - Inches656
Beam16.60 ft
Beam16 ft. 2 in. (4.93 m) including gunwale
Beam - Meters5.06
Beam - Meters4.93
Beam - Inches199
Beam - Inches194
Draft [max] - Detail4.50 ft
Draft [max] - Detail4 ft. 6 in. (1.38 m) including props
Draft [max] - Meters1.37
Draft [max] - Meters1.37
Draft [max] - Inches54
Draft [max] - Inches54
Displacement48281.00 lbs
Displacementnot available
Weight - Detailnot available
Weight - Detail48,060 lbs. (21,800 kg)
Weight - kgnot available
Weight - kg21799.63
Weight - lbs.not available
Weight - lbs.4806
Length - Metersnot available
Length - Meters16.67
Length - Inchesnot available
Length - Inches8
Length [over all with swim platform]not available
Length [over all with swim platform]58 ft. 2 in. (17.73 m)
Engine and Drivetrain
Fuel tank capacity - Gal793
Fuel tank capacity - Gal977
Fuel tank capacity - Liters3001.83
Fuel tank capacity - Liters3698.35
Engine makeVolvo Penta
Engine makenot available
Engine modelD11 IPS 95
Engine modelnot available
Horsepower725 hp
Horsepower825 hp (615 kW) each
Fuel typeDiesel
Fuel typeDiesel
Drive typeinboard
Drive typeInboard - Twin
Engine 2 Engine MakeVolvo Penta
Engine 2 Engine Makenot available
Engine 2 Engine ModelD11 IPS 95
Engine 2 Engine Modelnot available
Engine 2 Horsepower725 hp
Engine 2 Horsepowernot available
Engine 2 Fuel TypeDiesel
Engine 2 Fuel Typenot available
Engine 2 Drive Typeinboard
Engine 2 Drive Typenot available
Engine/s standardnot available
Engine/s standard(2) Catepillar
Fuel tank capacity - Detailnot available
Fuel tank capacity - Detail977 gal. (3,700 l)
Operational Info
Sleeping capacity6
Sleeping capacity6 - 8
Cabins3
Cabinsnot available
Head2
Headnot available
Water capacity185
Water capacity227 gal. (860 l)
Holding tank capacity - Gal92
Holding tank capacity - Gal4
Holding tank capacity - Liters348.26
Holding tank capacity - Liters151.42
Boat typePower
Boat typenot available
Holding tank capacity - Detailnot available
Holding tank capacity - Detail40 gal. (151 l)
General Boat Info
Makenot available
MakeRiviera Yachts
Modelnot available
Model51 Open Flybridge SII
Model Yearnot available
Model Year2009
Body / Hull
Hull materialnot available
Hull materialFiberglass
Hull typenot available
Hull typeModified Vee

Riviera Belize 54 Daybridge 2021 vs Riviera Yachts 51 Open Flybridge SII 2009 — Common Questions

Which is the larger boat — the Riviera Belize 54 Daybridge 2021 or the Riviera Yachts 51 Open Flybridge SII 2009?
The Riviera Belize 54 Daybridge 2021 is the longer of the two at 54,2 feet overall. The Riviera Yachts 51 Open Flybridge SII 2009 comes in at 54,0 feet, making it roughly 0,2 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Riviera Belize 54 Daybridge 2021 or the Riviera Yachts 51 Open Flybridge SII 2009?
For trailering, the Riviera Yachts 51 Open Flybridge SII 2009 has the edge at 4 806 lbs dry weight versus 48 281 lbs for the Riviera Belize 54 Daybridge 2021. 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 51 Open Flybridge SII 2009 is rated to a maximum of 825 hp, giving it the larger power ceiling. The Riviera Belize 54 Daybridge 2021 tops out at 725 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 Belize 54 Daybridge 2021 is Coast Guard rated for 16 passengers, while the Riviera Yachts 51 Open Flybridge SII 2009 is certified for 16. 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 Belize 54 Daybridge 2021 measures 199" wide, compared to 194" for the Riviera Yachts 51 Open 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 Belize 54 Daybridge 2021 or the Riviera Yachts 51 Open Flybridge SII 2009?
The Riviera Yachts 51 Open Flybridge SII 2009 has the bigger tank at 977 gallons, versus 793 gallons on the Riviera Belize 54 Daybridge 2021. That 184-gallon difference translates to roughly 552–920 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Riviera Belize 54 Daybridge 2021 and Riviera Yachts 51 Open Flybridge SII 2009 from the same manufacturer?
Yes — both the Riviera Belize 54 Daybridge 2021 and the Riviera Yachts 51 Open Flybridge SII 2009 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.