Detailed Evaluation & Buyer Recommendation
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
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