YachtCodex
Riviera

Riviera 78 Motor Yacht

In production
Riviera 78 Motor Yacht — photo 1

1 / 10

01-Riviera-78-MY-Running — Riviera Australia

Summary

81.4 ftLOA26.6 ftAIR DRAFT6.2 ftDRAFT19.7 ftBEAM
Motor MonohullInboard Diesel
Length overall
81.4 ft
Beam
19.7 ft
Displacement
140,434 lb
Engine power
1550–2000 hp
Cabins
4

* A standard reference image, not the actual boat — shown to help visualise this model's published dimensions.

Speed, Power & Tanks

What the builder publishes about how fast, how strong and how much the boat carries.

Power to weight

Total engine power per tonne of published displacement — more means livelier acceleration for the hull. Drawn for motor yachts.

62.8 hp/t

2 × 2,000 hp · 63.7 t

Tanks

Fuel and water on one scale: a tank twice the height holds twice as much.

  • Fuel2,695 gal
    Water211 gal

    26 gal of water per berth

Dimensions

LOA
81.4 ft (24.82 m)
Hull length
72.5 ft (22.11 m)
LWL
—
Beam
19.7 ft (6 m)
Draft (min)
—
Draft (max)
6.2 ft (1.9 m)
Air draft
26.6 ft (8.1 m)
Displacement
140,434 lb (63,700 kg)
Ballast
—
Cabins
4
Heads
—
Berths
8

Performance

Maximum speed
—
Cruising speed
—
Range
—
Guests
—
Crew
—

Engine and Tanks

Engine
1550–2000 hp (MAN)
Engine count
2
Engine manufacturer
MAN
Propulsion type
shaft
Fuel capacity
2,695 gal (10,200 L)
Fresh water capacity
211 gal (800 L)
Black water capacity
132 gal (500 L)

Construction

Hull material
—
Deck material
—
Rudder type
—
Steering wheels
—

Builder's Own Figures

Cockpit Area
16.5 m²
Engine options
MAN V12 Shaft Drive 1550 (2×) 1140 kW ea 1550 hp ea | MAN V12 Shaft Drive 1800 (2×) 1324 kW ea 1800 hp ea | MAN V12 Shaft Drive 2000 (2×) 1471 kW ea 2000 hp ea
Engine power basis
per engine as printed ('hp ea'); min = first option, max = largest option
Displacement basis
dry weight, approximate
Length basis
LOA including swim platform and bow sprit; hull length Lh to ISO 8666
Sleeping capacity as printed
8 persons + crew
Draft basis
maximum draft including propellers

Figures read fromrivieraaustralia.com/models/78-motor-yacht-enclosed-bridge-deck/· Specificationsread 9/18/2026

Layouts & Drawings

4 drawings from the builder's page: general arrangement, sail plan, profile.

About Riviera

Premium production

Australia's premium luxury motor yacht builder since 1980 — twenty-one current models in five collections from the 13.3-metre 395 SUV to the 24.8-metre 78 Motor Yacht, handcrafted at a 16.8-hectare site at Coomera on the Gold Coast for more than 6,000 owners worldwide.

Riviera launched with a single model, the 38 MKI, in Sydney in 1980, and moved the following year to the Gold Coast in Queensland with a staff of five, building eight boats that year. Through the 1980s a dozen models were designed, built and launched, and the first were exported to the United States and Europe. By the early 1990s three new models had won Modern Boating's Boat of the Year three years running. In 1998, with 280 people on the payroll, construction began on a new facility at Coomera, and many handcrafted models came out of it in the early 2000s, followed by awards and a growing international dealer network. In March 2012 Rodney Longhurst -- a Gold Coast developer, and a qualified builder and joiner by trade -- acquired the company; he is now chairman, and says his aim on buying Riviera was to make it one of the great names in boating. Under Longhurst and chief executive Wes Moxey the collections continue to be refined.

Visit brand page

The Riviera Range

Every model Riviera publishes, by length — where this one sits in the range.

  1. Riviera 78 Motor Yacht· this model81.4 ft
  2. Riviera 72 Sports Motor Yacht78.3 ft
  3. Riviera 68 Sports Motor Yacht Series II75 ft
  4. Riviera 6800 Sport Yacht Platinum Edition72.8 ft
  5. Riviera 64 Sports Motor Yacht69.7 ft
  6. Riviera 645 SUV69.7 ft
  7. Riviera 6200 Sport Yacht Platinum Edition68.4 ft
  8. Riviera 58 Sports Motor Yacht65 ft
  9. Riviera 585 SUV65 ft

Similar Yachts