Size is the first divide here: 20.67 m LOA on the Riva 68 Diable against 16.80 m on the Alen 55.
Both are rated for 16 guests. The Riva 68 Diable is the quicker boat, 37 knots to 35. Range favours the Alen 55, 280 nm against 260 nm. Drivetrains differ: the Alen 55 runs ips, the Riva 68 Diable shaft.
These two are closely matched; the decision comes down to the specific brief, garage envelope, guest count, and the missions the boat has to cover. The table below lays out every spec side by side.
The full spec table is below; the gold dot marks the leading value in each row.
| Dimensions | ||
| Length overall | 16.80m | 20.67m |
| Beam | 4.80m | 5.29m |
| Draft | 0.82m | 1.78m |
| Dry weight | 21,000 kg | 37,000 kg |
| Performance | ||
| Top speed | 35 kt | 37 kt |
| Cruising speed | 30 kt | 33 kt |
| Range | 280 nm | 260 nm |
| Propulsion | ||
| Engine | Volvo IPS 800 | MAN V12 1550 |
| Engines | 2 | 2 |
| HP per engine | — | 1550 |
| Propulsion | ips | shaft |
| Capacity | ||
| Passengers | 16 | 16 |
| Fuel capacity | 2,500 L | 3,800 L |
| Water capacity | 500 L | 600 L |
| Build & classification | ||
| Hull material | composite | grp |
| Classification | CE-B | — |
| Year | 2019 | — |
| Editorial highlight | ||
| First highlight | Full Composite AIREX Hull | Twin MAN V12 engine options |
Specifications, prices, availability, and performance figures are supplied for guidance only and remain subject to confirmation by the yard, seller, broker, survey, contract, and final specification.
The builders
Who builds each boat, and where, the yard behind the spec.
Alen Yacht is a Turkish semi-custom builder founded in 2007 by Alp Ozcan, with its production yard in Istanbul and service and representation in St. Tropez and Fort Lauderdale. The yard has positioned itself squarely in the superyacht-tend…
View Alen →Riva is the yard we place at the top of the tender shortlist when visual impact carries as much weight as the spec sheet. Founded in 1842 by Pietro Riva on the shores of Lake Iseo in Sarnico, northern Italy, it is one of the oldest continu…
View Riva →More comparisons
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Decide with help
Alen 55 or Riva 68 Diable, let's narrow it down.
Tell us how you'll use the boat and we'll come back with sea-trial slots, build-slot availability and an honest steer on fit.
Talk to us →