Detailed Evaluation & Buyer Recommendation
Riviera Belize 54 Sedan 2020 vs Riviera Yachts 51 Enclosed Flybridge SII 2008 — Same Brand, Different Boat
The Riviera Belize 54 Sedan 2020 vs Riviera Yachts 51 Enclosed Flybridge SII 2008 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 Sedan 2020 at 54,2 ft versus Riviera Yachts 51 Enclosed Flybridge SII 2008 at 54,0 ft. Weight tells a clearer story for trailering families: the Riviera Belize 54 Sedan 2020 tips the scales at 46 083 lbs — 41 277 lbs more than the Riviera Yachts 51 Enclosed Flybridge SII 2008 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 1 650 hp, the Riviera Yachts 51 Enclosed Flybridge SII 2008 has a 1 050-hp advantage over the Riviera Belize 54 Sedan 2020's 600-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 Belize 54 Sedan 2020 carries 793 gallons versus 713 gallons in the Riviera Yachts 51 Enclosed Flybridge SII 2008. 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 Enclosed Flybridge SII 2008 and its 1 650-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Riviera Belize 54 Sedan 2020 with its 600-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] - Detail4.40 ft
Draft [max] - Detail4 ft. 6 in. (1.38 m) including props
Draft [max] - Meters1.34
Draft [max] - Meters1.37
Draft [max] - Inches53
Draft [max] - Inches54
Displacement46083.00 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 - Gal713
Fuel tank capacity - Liters3001.83
Fuel tank capacity - Liters2699
Engine makeVolvo Penta
Engine makenot available
Engine modelD8 IPS 8
Engine modelnot available
Horsepower600 hp
Horsepowernot available
Fuel typeDiesel
Fuel typeDiesel
Drive typeinboard
Drive typeInboard - Twin
Engine 2 Engine MakeVolvo Penta
Engine 2 Engine Makenot available
Engine 2 Engine ModelD8 IPS 8
Engine 2 Engine Modelnot available
Engine 2 Horsepower600 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 standardx2 MTU 825 hp (615 kW) each
Fuel tank capacity - Detailnot available
Fuel tank capacity - Detail713 gal. (2,700 l)
Engine maxnot available
Engine max1,650 hp (1,230 kW)
Operational Info
Sleeping capacity6
Sleeping capacity6 to 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 Enclosed Flybridge SII
Model Yearnot available
Model Year2008
Body / Hull
Hull materialnot available
Hull materialFiberglass
Hull typenot available
Hull typeModified Vee