Palm Beach Gardens, Florida Jon Plewniak · One Water Yacht Group
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Riviera 78 Motor Yacht profile
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Motor Yacht · Riviera Australia · Flagship · Luca Vallebona Collaboration
78 Motor Yacht
The Magnificent New Flagship. A New Era.
Luca Vallebona Design · MAN V12 Up to 2,000hp · 30+ Knots · 2,500 NM Range · 4 Cabins + 2 Crew
80'8"
Length Overall
19'8"
Beam
2,695 US gal
Fuel
>30 kts
Top Speed
Overview Gallery Specifications Enquire
World Premiere Gold Coast · Luca Vallebona Design · MAN V12 Up to 2,000hp · 2,500 NM Range · Carbon Fibre Fin Stabilisation
About the 78 Motor Yacht

A New Era of Riviera. Magnificent New Flagship.

The Riviera 78 Motor Yacht is the most magnificent, most capable, and most luxurious vessel Riviera has ever built. Created in collaboration with Italian superyacht designer Luca Vallebona — the same partnership that produced the acclaimed 6800 Sport Yacht — the 78 Motor Yacht represents more than 35 years of luxury yacht construction and design experience distilled into a single, extraordinary flagship. She made her world premiere on the Gold Coast to extraordinary enthusiasm from the global yachting press.

At 80 feet 8 inches overall, the 78 Motor Yacht is available in two configurations: Open Bridge Deck — the traditional open flybridge with commanding 360-degree views — or Enclosed Bridge Deck — an air-conditioned upper lounge with helm, creating a private second saloon above the main deck. Both versions share the same hull, same engines, and same extraordinary interior quality. The transition between inside and outside is seamless, and the engineering — including Humphree carbon fibre fin stabilisation as standard — ensures comfort in all conditions.

Twin MAN V12 engines in 1,550hp, 1,800hp, or 2,000hp configurations are available. With 10,200 litres of fuel, the 78 can cruise for more than 1,000 nautical miles or deliver speed over 30 knots. At displacement speed of 7.5 knots, range extends to 2,500 nautical miles. This is a yacht built for serious blue-water passages as much as for marina appearances — a genuine ocean-going flagship with the will and the ability to go anywhere.

Key Features
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Luca Vallebona — Superyacht Designer
The same Italian superyacht designer behind the acclaimed 6800 Sport Yacht brings his portfolio of 50-metre+ superyacht projects to the 78 Motor Yacht. The influence is visible everywhere — from the elongated superstructure lines to the refined interior volumes.
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Open or Enclosed Bridge Deck — Your Choice
Choose an open flybridge with panoramic 360-degree views, or an enclosed bridge deck creating a climate-controlled second saloon with helm. Both versions deliver the same exterior presence and interior luxury — the choice is purely about how you want to live aboard.
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Humphree Carbon Fibre Fins — Stability Standard
Humphree carbon fibre interceptor fins are standard on the 78 Motor Yacht — a rare inclusion at this level that dramatically reduces roll underway and at anchor. Combined with the deep V hull, the result is a genuinely comfortable offshore platform.
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2,500 NM Range — True Bluewater Capability
With 10,200 litres of fuel and a hull optimised for long-range efficiency, the 78 can reach 2,500 nautical miles at displacement speed. From Florida to the Bahamas and beyond, to the Pacific Islands, or across the Atlantic — this is a genuine world cruiser.
MAN V12 — Three Power Options
Choose MAN V12-1550 (1,100hp), V12-1800 (1,323hp), or V12-2000 (1,471hp) per engine. The V12-2000 option delivers speeds approaching 34 knots — extraordinary for a 80-foot motor yacht. MAN Gold Standard Premium warranty included.
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4 Guest Cabins + 2 Crew — Self-Sufficient
Four beautifully appointed guest cabins plus two dedicated crew cabins make the 78 fully self-sufficient for extended passages. A full-height engine room with tool bench enables running repairs underway — the mark of a serious bluewater yacht.
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Technical Specifications

Full Specifications

Source: Riviera Australia · rivieraaustralia.com · All specifications subject to change.

24.58 m / 80'8"
Length Overall
6.00 m / 19'8"
Beam
1.90 m / 6'3"
Draft
10,200 L / 2,695 US gal
Fuel Capacity
4 Cabins + 2 Crew
Accommodation
Up to 8 Guests
Guest Capacity
Open or Enclosed Deck
Available Configurations
2,500 NM @ 7.5 Kts
Maximum Range
Propulsion & Performance
MAN V12-1550, V12-1800 or V12-2000
Up to 2,000hp each — shaft drive
30+ Knots (~34 kts at 2,000hp)
Humphree carbon fibre fin stabilisation
2,500 NM @ 7.5 Knots Range
10,200 L / 2,695 gal fuel
Open or Enclosed Bridge Deck
7-Year Structural + MAN Gold Standard Warranty
Request Information
Enquire About the 78 Motor Yacht
Jon Plewniak is an authorised Riviera specialist through One Water Yacht Group. The 78 Motor Yacht is Riviera's ultimate flagship — a world-class motor yacht built for serious bluewater cruising. Jon responds personally within the hour.