On the Adler Suprema 76, it’s what you don’t hear that makes all the difference.
Adler Suprema 76.

Adler Suprema 76.

One glance at the Adler Suprema 76, and most boaters will peg her as a diesel-guzzling ocean smasher designed for short sprints between Dom Perignon stops on the Riviera.

They’d be wrong. Oh. So. Wrong.

This yacht has a transoceanic range of 3,400 nautical miles at 8 knots. Owners can run everything—including the air conditioning, galley appliances and televisions—for 24 silent hours on batteries alone. The boat can cruise on just those batteries for one hour with no vibration or fumes. And, she can dash at 30 knots as needed, say, to outrun a storm.

The key to this boat’s capabilities is Adler’s Hybrid Marine Solution, a system that uses a pair of 1,150-horsepower Caterpillar diesels plus “e-units,” which are a combination of electric motor and generator. The diesels can fully recharge the lithium polymer batteries by running for just one hour a day.

A chart of the Adler Suprema's electrical and hybrid capabilities.

A chart of the Adler Suprema's electrical and hybrid capabilities.

The hybrid power system works in tandem with the slippery hull lines that Italian superyacht designers Nuvolari-Lenard drew. Adler, a Swiss aviation company, builds the boats in Italy of resin-infused Kevlar and carbon fiber, keeping displacement to 98,000 pounds, or about 10 tons less than some similar-length yachts.

Drawing on Swiss, Austrian, German and Italian technology, the Adler Suprema 76 also has salon windows that turn opaque at the touch of a button to block out marina lookie-loos. Drink holders are electrically chilled, and warming heaters under the sole in the pilothouse, salon, galley and lower decks invite bare feet even in winter. An infrared heating strip in the cockpit makes alfresco dining possible in cool weather.

“We didn’t want to reinvent the wheel,” Adler Chairman Alexander Vagacs stated in a press release. “We wanted to reimagine it.”

The Suprema’s Hybrid Marine Solution has twin diesel Caterpillar engines and twin ATE high-efficiency 100-kW e-unit generators, which provide four modes of cruising: electric, hybrid, generator and diesel. 

The Suprema’s Hybrid Marine Solution has twin diesel Caterpillar engines and twin ATE high-efficiency 100-kW e-unit generators, which provide four modes of cruising: electric, hybrid, generator and diesel. 

And reimagine a yacht of this length, they did. The 76’s security and safety system includes fire awareness and suppression systems, CCTV, infrared cameras and multiple underwater cameras. The proprietary monitoring system allows skippers to check that all portholes and doors are closed, and there are alarms that only owners and skippers know exist. Six LCD touchscreens from Boening allow control of the yacht systems from air conditioning to lights and curtains, or owners can use an iPad for the same controls.

Skippers also can dial in the various drive modes for each voyage. Basic mode is pure electric, with diesels off and power coming to the e-units from the batteries.

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The true hybrid mode shuts down one diesel while the other diesel is used as a generator to power the boat, creating a transoceanic speed of 8 knots at a fuel burn of 2.1 gallons per hour, or 4 nautical miles per gallon. The range of 3,500 nautical miles could include a cruise from Los Angeles to Honolulu, Seattle to Mazatlán in Mexico, or New York to Gibraltar.

Next up the power chain is traditional twin diesel mode, using the mains to power the boat to a top speed of 30 knots, or a cruise of about 22 knots.

The last mode is twin diesel/generator, in which the diesels not only turn the props but also power the e-units as generators, so the batteries are fully charged for all-electric operation on arrival at a harbor.

Amid a hotbed of debate as to what next-generation long-range cruisers might look like, Adler Yachts’ 76-foot Suprema pleads an interesting case. The semi-custom hybrid yacht is a technologically advanced midsize vessel that embraces modern form while providing exceptional function. 

Amid a hotbed of debate as to what next-generation long-range cruisers might look like, Adler Yachts’ 76-foot Suprema pleads an interesting case. The semi-custom hybrid yacht is a technologically advanced midsize vessel that embraces modern form while providing exceptional function. 

Adler’s Suprema 76 is customizable, and owners can choose one of two standard layouts with three or five staterooms plus quarters for crew—or pencil in their own ideas from a blank sheet. The 76 that I got aboard had a full-beam master stateroom amidships with a walk-in closet and ensuite head. A VIP stateroom (also ensuite) was forward, and a third guest stateroom was aft with a settee and ensuite head. Crew quarters for two were aft, with direct access from the salon for safety at sea.

In the standard versions of the yacht, the salon has a curved, restaurant-style window aft for dining with a view from the air-conditioned or heated space, and the window can turn opaque for privacy. The pilothouse can be separated for night running, and the flybridge comes with a standard fiberglass hardtop.

The Adler Suprema 76’s fuel-efficient propulsion and other features make her a serious contender in her size range. 

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