Delphia 11 test: electric versus diesel

The shipyard, now part of the Bénéteau group, is renewing its entire range. The Delphia 11 is the first in a series that relies on electricity… but not only! A very successful concept that has everything to seduce boaters looking for maximum comfort. Photos: Virginie Pelagalli.

Comfort and space, silence, outings with friends and family, all within a senator’s train… Here is in a nutshell the program for the Delphia 11, the latest addition to the Delphia yard. This was born in Poland some thirty years ago. The year 2018 marked an important step since it was acquired by the Bénéteau group.

Delphia 11 electric version

Incidentally, the French group took advantage of this very strategic operation to add a new string to its bow. Indeed, with Delphia, Bénéteau is attacking the market for lakes, rivers and inland bodies of water, as well as the electric market. The hull of the Delphia 11 was moreover designed by the Tony Castro firm for this type of propulsion.

With the engine manufacturer Torqeedo

But the hold can also accommodate a heat engine. Because, as Martin Schemkes, director of the Delphia brand, points out: “We are not fighting diesel, we are promoting electric. It’s all in the nuance… For electric propulsion, Delphia has teamed up with the German engine manufacturer Torqeedo, a leader in this field for many years. The Torqeedo Deep Blue 50i (equivalent to 80 hp steam) and its BMW i3 battery bank are available with three packs: Life, Cruise and Rapid, the choice being made with regard to the use and habits of the crew.

Thus, the Life pack has a single battery, where the Cruise pack has three and is intended for those who undertake long navigations without stopping. As for the Rapid pack, it is equipped with a charger that will be more suitable for rental companies to save time when charging. On the thermal side, the yard has opted for three diesel powers from the engine manufacturer Yanmar: 57, 110 or 150 horsepower. It is easy to understand that lovers of large displacements will have to go their way… Even the shape of the hull has been designed for low speeds.

interior fittings delphia 11
The interior fittings of the Delphia 11 focus on comfort and light

Stability both when sailing and when stationary is also an argument of choice, not to mention the performance which should allow you to cover a maximum of miles with the lowest possible fuel consumption. The figures communicated by the Delphia shipyard point in this direction. Thus, the maximum advertised speed is 10 knots. These performances are entirely consistent with the limits imposed by the regulations on most European channels.

With the 150 horsepower Yanmar, the Delphia 11 consumes only 2.5 l/h at 4.3 knots (economic cruising speed), which gives her a range of 690 nautical miles!

But, beyond simple performance, Delphia wanted to invent a whole environment that goes with this mode of cruising, such as plenty of sunbathing, to read or enjoy a drink, bike racks with locks on the rear shelf to enjoy gourmet stops by bike, etc.

In summary, calm, space, volume and comfort. From this point of view, the Delphia 11 does not lack it, both inside and outside. The U-shaped saloon benefits from a beautiful light and faces an L-shaped galley, itself located against the starboard side, in the extension of the cockpit. Three steps down is the space reserved for cabins and toilets.

engine block delphia 11
Whether the boat is thermal or electric, the engine block is located under a hatch, between the saloon and the galley.

The yard offers many configurations, again to best meet the expectations of future owners, whether private individuals or rental companies. Thus, there is a version with a single cabin, against which is attached a utility room where you can choose between an office, a laundry room, storage, etc.

Several layout versions

Versions with two or three cabins are also available. Similarly, the bathrooms are available with different configurations (two toilets or one toilet with a large separate shower cubicle).

delphia kitchen 11
The L-shaped galley has plenty of storage space and equipment for preparing meals on board (sink, refrigerator, hotplates, etc.).

Outside, the deck plan remains common to all models, with a very well protected walkaround and therefore designed for families sailing with young children. The front part is intended for idleness thanks to sunbeds which occupy almost all the space. Shelves can be attached to place your drinks or tray of petit fours…

starboard catwalk delphia 11
The pilot has direct access to the starboard gangway. The shipyard has taken up the concept of large steering wheels, like those of trawlers.

The big difference on the exterior concerns the superstructures. Delphia has developed a Sedan version and a Flylounge version, the latter increasing the air draft from 2.75 meters to 2.95 meters, a detail to take into account for those who sail in sectors where the decks lack height. . The Sedan version displays a very dynamic profile, with a coachroof cap that goes far back and brings a very successful aesthetic.

The same goes for the Flylounge version, which is quite balanced. The downside of the latter comes from the seat backs of the flybridge, which can be folded down to gain a few centimeters below decks, but are too flexible to lean against. The yard announces their upcoming change in favor of more rigid models. In addition, an additional handrail could be added at the level of the ladder leading to the flybridge.

The advantages of electric

Delphia 11 electric version
Whether powered by thermal or electric, the Delphia 11 has been designed for calm waters or rivers

An outdoor kitchen option is available for those who wish to cook their skewers outside. It sits behind the backrest of the U-shaped external bench seat in the cockpit. Whether or not the option is selected by the owner, two lockers take place at the bottom of this rear bench seat and will be perfect for storing hawsers and fenders.

delphia 11 - all three models
In this photo, three Delphia 11 models are sailing together. At the front, the two Delphias in their Sedan version, in internal combustion (left) and electric (right). In the foreground, the Delphia 11 in its Flylounge configuration.

If electric propulsion is chosen, the sockets are located in the port side locker. Still at the rear, the yard also offers a hoop to wedge and lock two electric bicycles. A clever cockpit cover system has been developed by the yard.

Mounted on a rail and disappearing into the uprights of the wheelhouse when not in use, this awning can be attached and removed in less than a minute. When sailing, the electric experience is appealing. The boat does not make a sound. Only that of the gurgling water at the back of the bathing platform is noticeable. It’s a safe bet that this type of propulsion will be favored by most owners.

delphia 11 cabin
The owner’s cabin occupies the entire tip, but charterers can opt for a version with two double cabins forward.

Moreover, to confirm this forecast, the yard announces that the two versions are already equal in terms of orders. The announced stability is not an empty word and the glasses on their shelf prove it: they have not moved all day!

With the help of thrusters

No vibration was perceived on board the Delphia 11 with electric motor. The stern and bow thrusters are there to assist the single shaft line and will be welcome, especially when reversing. Visibility from the interior is good, despite a deckhouse sloping forward and which slightly reduces the width of the central glazing.

delphia 11 sun lounger
A large bench seat, which is more like sunbathing, takes place just in front of the wheelhouse.

She is excellent from the flybridge. For its part, the Delphia 11 in thermal version displays identical behavior in navigation and during maneuvers. The major difference lies in the level of noise, necessarily more present with a heat engine in the bottom of the hold. But it remains quite acceptable, given the rather low speeds for which this boat is intended.

Delphia 11 features

  • Overall length 10.77m
  • Hull length 9.99 m
  • Width 3.85m
  • Weight 6,815 kg
  • Draft 0.80 m
  • Air draft 2.75 m (Sedan), 2.95 m (Flylounge)
  • power recommended 57 hp
  • Maximum power 150 hp (thermal)
  • Maximum power 80 hp (electric)
  • Water capacity 380 l
  • Fuel capacity 400 l
  • Cat. B/10 pers.
  • Shaft line transmission
  • Manufacturer Delphia (Poland)
  • Contact

Delphia 11 PRICE

  • €377,922 with 150 hp Yanmar (Sedan)
  • €383,226 with 150 hp Yanmar (Flylounge)
  • 5€02,554 with 80 hp Torqeedo (Sedan)

The performance of the Delphia 11 with a Yanmar 150 hp 4LV 150

Propeller type: 22 x 14”

rpm Speed ​​in knots Consumption in l/h Yield in thousand/l
1,000 2.9 1.3 2.23
1,500 4.3 2.5 1.72
2,000 5.6 5.5 1.01
2,500 6.4 10.3 0.62
3,000 7.8 16.8 0.46
3,500 8 28.9 0.27
3,650 8.4 29.2 0.28

Our assessments


  • Choice of electrical and thermal concept
  • Habitability and volume of trunks
  • Stability of the hull when sailing and when stationary
  • Circulation on board, inside and out

The lessers

  • Lack of a handrail to go up to the fly (Flylounge version)
  • Little space on the bathing platform with the outdoor kitchen option
  • Flybridge backrests too soft (Flylounge version)

Discover all our tests by clicking here!

Posted by Francois Paris

Posted by Francois Paris

Editor-in-chief of L’Argus du Bateau and deputy editor-in-chief of Moteur Boat, this specialist in the second-hand sector has always been sailing, mainly on the coasts of northern Brittany, where he is from.

See all articles by François Paris

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