Riviera Yachts 4700 Sport Yacht 2010 boat specs
Riviera Yachts
Riviera Yachts 4700 Sport Yacht 2010
2010
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Riviera Yachts 78 Motor Yacht 2011 boat specs
Riviera Yachts
Riviera Yachts 78 Motor Yacht 2011
2011
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Riviera Yachts 4700 Sport Yacht 2010 vs Riviera Yachts 78 Motor Yacht 2011 — Same Brand, Different Boat

Matching a modified vee Riviera Yachts 4700 Sport Yacht 2010 against a deep vee Riviera Yachts 78 Motor Yacht 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.

Size is the most obvious dividing line here. The Riviera Yachts 78 Motor Yacht 2011 measures 78,0 feet overall (2011), giving it roughly 27,3 additional feet of deck space compared to the Riviera Yachts 4700 Sport Yacht 2010 at 50,8 feet (2010). Weight tells a clearer story for trailering families: the Riviera Yachts 78 Motor Yacht 2011 tips the scales at 13 426 lbs — 13 018 lbs less than the Riviera Yachts 4700 Sport Yacht 2010 at 408 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 1 015 hp, the Riviera Yachts 78 Motor Yacht 2011 has a 440-hp advantage over the Riviera Yachts 4700 Sport Yacht 2010's 575-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 78 Motor Yacht 2011 carries 2 117 gallons versus 634 gallons in the Riviera Yachts 4700 Sport Yacht 2010. 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 78 Motor Yacht 2011 is rated for 23 passengers, while the Riviera Yachts 4700 Sport Yacht 2010 caps at 15. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Riviera Yachts 78 Motor Yacht 2011 could be the deciding factor.

Bottom line: Choose the Riviera Yachts 78 Motor Yacht 2011 if your priority is putting more people on the water — it handles 23 passengers and at 78,0 ft it has the deck room to back that rating up comfortably. The Riviera Yachts 4700 Sport Yacht 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 15 that costs less to run day-to-day.
General Boat Info
MakeRiviera Yachts
MakeRiviera Yachts
Model4700 Sport Yacht
Model78 Motor Yacht
Model Year201
Model Year2011
Measurements / Dimensions
Beam15 ft. 7 in. (4.76 m) including gunwale
Beam20 ft. (6.1 m) including gunwale
Beam - Meters4.75
Beam - Meters6.1
Beam - Inches187
Beam - Inches24
Draft [max] - Detail4 ft. 1 in. (1.25 m) including props
Draft [max] - Detail4 ft. 6 in. (1.37 m) including props
Draft [max] - Meters1.24
Draft [max] - Meters1.37
Draft [max] - Inches49
Draft [max] - Inches54
Weight - Detail40,800 lbs. (18,500 kg)
Weight - Detail134,260 lbs. (60,900 kg)
Weight - kg18506.55
Weight - kg60899.26
Weight - lbs.408
Weight - lbs.13426
Length - Feet50.75
Length - Feet78
Length [over all with swim platform]54 ft. 9 in. (16.69 m)
Length [over all with swim platform]81 ft. 6 in. (24.85 m)
Length overall - Detail50 ft. 9 in. (15.46 m)
Length overall - Detail78 ft. (23.77 m)
Length overall - Meters15.47
Length overall - Meters23.77
Length overall - Inches609
Length overall - Inches936
Body / Hull
Hull materialFiberglass
Hull materialFiberglass
Hull typeModified Vee
Hull typeDeep Vee
Engine and Drivetrain
Engine/s standard(2) CATS
Engine/s standard(2) CAT C18
Fuel tank capacity - Detail634 gal. (2,400 l)
Fuel tank capacity - Detail2,117 gal. (8,014 l)
Fuel tank capacity - Liters2399.95
Fuel tank capacity - Liters8013.71
Fuel tank capacity - Gal634
Fuel tank capacity - Gal2117
Fuel typeDiesel
Fuel typeDiesel
Drive typeInboard - Twin
Drive typeInboard - Twin
Engine max575 hp (423 kW) each
Engine max1,015 hp (747 kW) each
Operational Info
Sleeping capacity6
Sleeping capacity8 - 12
Water capacity198 gal. (750 l)
Water capacity300 gal. (1,135 l)
Holding tank capacity - Detail40 gal. (151 l)
Holding tank capacity - Detail100 gal. (378 l)
Holding tank capacity - Liters151.42
Holding tank capacity - Liters378.54
Holding tank capacity - Gal4
Holding tank capacity - Gal1

Riviera Yachts 4700 Sport Yacht 2010 vs Riviera Yachts 78 Motor Yacht 2011 — Common Questions

Which is the larger boat — the Riviera Yachts 4700 Sport Yacht 2010 or the Riviera Yachts 78 Motor Yacht 2011?
The Riviera Yachts 78 Motor Yacht 2011 is the longer of the two at 78,0 feet overall. The Riviera Yachts 4700 Sport Yacht 2010 comes in at 50,8 feet, making it roughly 27,3 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Riviera Yachts 4700 Sport Yacht 2010 or the Riviera Yachts 78 Motor Yacht 2011?
For trailering, the Riviera Yachts 4700 Sport Yacht 2010 has the edge at 408 lbs dry weight versus 13 426 lbs for the Riviera Yachts 78 Motor Yacht 2011. 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 78 Motor Yacht 2011 is rated to a maximum of 1 015 hp, giving it the larger power ceiling. The Riviera Yachts 4700 Sport Yacht 2010 tops out at 575 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 4700 Sport Yacht 2010 is Coast Guard rated for 15 passengers, while the Riviera Yachts 78 Motor Yacht 2011 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 4700 Sport Yacht 2010 measures 187" wide, compared to 24" for the Riviera Yachts 78 Motor Yacht 2011. 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 4700 Sport Yacht 2010 or the Riviera Yachts 78 Motor Yacht 2011?
The Riviera Yachts 78 Motor Yacht 2011 has the bigger tank at 2 117 gallons, versus 634 gallons on the Riviera Yachts 4700 Sport Yacht 2010. That 1483-gallon difference translates to roughly 4449–7415 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Riviera Yachts 4700 Sport Yacht 2010 and Riviera Yachts 78 Motor Yacht 2011 from the same manufacturer?
Yes — both the Riviera Yachts 4700 Sport Yacht 2010 and the Riviera Yachts 78 Motor Yacht 2011 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.