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2014 expeditions

Itinerary subject to change

Considering the enthusiasm that the boat generates at each port of call, PlanetSolar will pursue her awareness-raising campaign on the efficiency and potential of photovoltaic energy and will go to meet the general public.

The MS Tûranor PlanetSolar will begin her 2014 voyage by calling at Boulogne-sur-Mer (France). The solar boat will be open to the public during the 23rd Festival des Images de Mer [Festival of the Sea Images], organised by the National Sea Centre (NAUSICAA). She will then continue on her way, heading toward the Mediterranean Sea stopping at Attalayoun (Morocco) at the heart of the Marchica Lagoon. The local authorities look upon the boat’s arrival in this region as a means of encouraging the use of renewable energy as part of a substantial revitalisation project of the area. The catamaran will then head for the Principality of Monaco where she will host new events as part of the “2014 Solar1 Monte Carlo Cup”, the first solar boat race organised in Monaco.

In August, the vessel will resume her role as a scientific platform for the University of Geneva with the expedition TerraSubmersa.

Exploring submerged prehistoric landscapes

In August, the vessel plans to resume her role as a scientific platform for the University of Geneva  with the Expedition TerraSubmersa. This new expedition is the result of a close collaboration between the Laténium in Neuchâtel (Switzerland), the Greek Department of Underwater Antiquities, the Swiss School of Archaeology in Greece, and the Hellenic Centre for Marine Research. It aims to explore the prehistoric landscapes submerged in the Argolic Gulf in Greece, in an attempt to reconstitute them and perhaps to find traces of human activity. . The catamaran’s spacious rear deck and complete stand-alone energy system, including her shallow draft, will effectively make her an ideal working base for the scientists involved in the expedition.

At the end of the last ice age, around 20,000 years ago, sea level was considerably lower than it is today. By studying these submerged prehis- toric landscapes, archaeologists can reconstitute the environments that have disappeared under water and comprehend the interactions between prehistoric man and the sea. These studies, which are likely to become one of the major archaeological challenges of the 21st century, will enable to identify the mechanisms of population settlement in coastal areas.

In addition to these research activities, the vessel will call at Eretria, Athens and Nafplio in Greece. This will be an opportunity to introduce both the archaeologists’ work and expedition’s challenges to the public, while illustrating the many uses of the solar vessel.

The project is conducted by Julien Beck, senior lecturer at the Departement of ancient sciences of the University of Geneva.

For more info regarding this expedition:

This expedition is in collaboration with:

PlanetSolar makes a remarkable entrance in Venice (Italy), and starts searching for her next owner !


Launched on April 13 in Boulogne-sur-Mer (France), PlanetSolar’s 2014 campaign comes to an end today, in Venice, the boat’s last stop and prestigious winter home. This 9,000 kilometer trip, spread out over 5 months of navigation, featured stops in Atalayoun (Morocco), Monaco, and then Greece, where the ship transformed into a scientific platform as part of the “TerraSubmersa” archeological expedition, led by the University of Geneva (UNIGE). Once again, the largest solar-powered ship ever built showed she could be used for concrete goals, and thus reaffirmed her position as a multi-functional tool and formidable communication platform. Now at her peak, the ship searches for a new owner.

PlanetSolar’s 2014 campaign ends today, on a high note. Through the course of these past 5 months, the largest solar-powered ship in the world has reaffirmed her position as a multi-functional tool, and has definitively confirmed her incredibly important use as a scientific platform, launched in 2013.

During 8 stops spread out along a 9,000 kilometer route, the solar-powered boat met with the public and carried out her mission of promoting solar energy. The high point of this 2014 campaign was the “TerraSubmersa” scientific expedition, which took place in Greece during the month of August. Carried out by the University of Geneva (UNIGE), this mission aimed to explore the prehistoric landscapes that have been swallowed up by the waters of the Kiladha Bay, in order to reconstruct them and identify potential traces of human activity. For more information, about TerraSubmersa, click here.

Thanks to a partnership with Vento di Venezia (VdV), the organization responsible for promoting the Island of Certosa (Venice), PlanetSolar will spend the winter in the Serene Republic. During this period, which will last until May 2015, VdV and PlanetSolar will jointly organize public visits and private events. To celebrate the end of her campaign, a series of activities will be organized around the boat from September 4 to September 9.

PlanetSolar seeks a new owner

The MS Tûranor PlanetSolar adventures have been due to the Stroeher family (boat owner), a German family that is passionate about solar technologies, and has been operating behind the scenes since the start of the project.

“The goal was on the one hand to conceptualize an idea that could prove the effectiveness of solar technology, and would help promote and develop that sector. On the other hand, we also wanted to demonstrate that beyond her technical prowess, the ship could be used for concrete, useful goals,” explains Immo Stroeher, the family’s patriarch. The businessman’s financial investment, as well as his significant personal engagement, has allowed PlanetSolar to go much further than a single trip around the world, in creating a durable enterprise that now allows the ship to be used for concrete goals.

“The MS Tûranor PlanetSolar, winner of 6 Guinness World RecordsTM, not only completed the first solar-powered voyage around the world, but has also successfully carried out two unique scientific missions in 2013 and 2014, both of which were punctuated with prestigious stops during which countless visitors were able to visit the interior workings of the ship! Today, we are very proud to note that after the success of her voyage around the world, PlanetSolar has undergone a perfect transformation, carrying out not only scientific missions, but also serving as a powerful tool of communication thanks to the enthusiasm she generates at each stop. Our expectations have been exceeded, and it is time for us to retire, and pass this unique ship on to a new owner.” Immo Stroeher concluded.

A Mini MS Tûranor PlanetSolar at Mini-Europe


Thanks to the new partnership between PlanetSolar and Mini-Europe, since July 2, 2014, visitors to the Belgian theme park have the opportunity to admire a wonderful model MS Tûranor PlanetSolar which sits in the middle of one of the park’s pools.

To see the model for yourselves, all you have to do is travel to Belgium, or more precisely, to Bruparck, at the foot of the Brussels Atomium, where the Mini-Europe park is located.

Since 1989, Mini-Europe has welcomed more than 350,000 visitors a year, and is one of Brussels’s leading tourist attractions. Throughout the park, you can travel all across Europe thanks to hyper-realistic models of the continent’s most famous monuments and cities. All without fearing the exorbitant costs of a plane ticket.

PlanetSolar’s presence in such a famous location brings her to an audience who would not otherwise have crossed paths with MS Tûranor PlanetSolar during the numerous stops on her tour. Furthermore, the meticulously created model perfectly conveys the dimensions of the largest solar-powered ship in the world, thus giving a great overview of what such a catamaran can offer. We are proud that our ship has a place in this park, surrounded by all the most mythical monuments of Europe, and would like to thank Mini-Europe from the bottom of our hearts for this opportunity!

For more information about Mini-Europe, visit:

PlanetSolar concludes her TerraSubmersa expedition and sets sail for Venice (Italy)!


Since July 28, the MS Tûranor PlanetSolar has travelled through Greece as part of the UNIGE-led TerraSubmersa expedition. This mission was divided into two distinct phases. The first was to introduce the archeologists’ work among the public and local authorities through a series of events organized along the three stops (Eretria, Athens, Napflio), while the second phase was exclusively dedicated to archeological research in the Gulf of Napflio.

“The catamaran’s spacious liveable surface and her complete energy independence, as well as her low draught and great maneuverability made it an optimal work platform for the researchers. Once again, the MS Tûranor PlanetSolar has shown that she is an ideal base for scientific research, and reaffirms her many versatile uses!” declared the ship’s captain, Gérard d’Aboville.

PlanetSolar is extremely satisfied with this mission. At each stop, the ship was met with enthusiasm by the public, and drew the attention of Greek authorities. Thus, more than 2,000 people stepped through the catamaran’s walkway. Moreover, PlanetSolar had the opportunity to welcome local political figures aboard, including Konstantinos Tassoulas, the Greek minister of culture, Giannis Maniats, the Greek minister of the environment, energy, and climate change, as well as the wife of the Greek Prime Minister Antonis Samaras. On the Swiss side, PlanetSolar also notably welcomed Walter Steinmann, director of the Federal Energy Office (OFEN).

Currently, the ship and her crew are sailing towards Venice. They are expected to drop anchor in the City of Doges on September 4.

Preliminary Results of the TerraSubmersa Expedition

This Greco-Swiss expedition, led by UNIGE archeologists in collaboration with the Laténium of Neuchâtel, the Greek Service for Underwater Antiquities, the Swiss School of Archeology in Greece, and the Hellenic Center for Maritime Research, aimed to explore the prehistoric landscapes that have been submerged by the waters of the Gulf of Napflio, in order to remodel them and to identify any potential traces of human activity.

At the end of the Ice Age, about 20,000 years ago, the sea level was considerably lower than it is today. By remodeling the landscapes that have disappeared underwater, archeologists hope to understand the dynamics through which coastal zones were populated. In the TerraSubmersa expedition, research focused on the Franchti cave, located on the northern bank of the Bay of Kiladha, which was inhabited for close to 35,000 years, from the Paleolithic to the Neolithic ages. “We collected fantastic data, whose analysis will take two years of work,” enthused Julien Beck, the expedition’s lead scientist. “The preliminary results are encouraging!” In fact, by mapping the seabeds, the researchers found paleobeaches dating back to different periods in prehistory. All signs lead to believe that these beaches were shaped by the inhabitants of the Franchti cave, in which scientists recovered shells and the remains of fish. Furthermore, faults indicating tectonic shifts in the gulf of Nafplio have been detected with the echo-sonar installed aboard the solar-powered ship. These faults could explain the difference in depth of the paleobeaches.


Lead and oil are the matters at hand


Our mission started under a leaden sky and an on an oily sea, perfect conditions for TPS, which gorges herself on kilowatts and glides effortlessly into the Bay of Kiladah.

Our measurement tools float in our wake. A little platform which we pull along emits a sort of hammering sound, like the beating of a perfectly regular heart, a wave that strikes the bottom of the sea and whose reverb is traced across the screens which four Greek scientists back in the marina scrutinize. Up above, in the wheelhouse, Brieux navigates right up against a cliff… All day, we follow pre-determined routes, at the perfectly controlled speed and precise curves of experienced sailors.

We’ve entered into the heart of the matter, and even if it is often best to keep a soldier’s stiff upper lip, this is not the time to trust in the apparent calm; we can feel a sense of contained excitement, as we continue on this very particular treasure hunt, and each member hopes that the Terra Submersa mission will succeed in digging up some of the bay’s deep secrets.


Hard at Work


Our passage through the Corinth Canal, with a nearly 6 kilometer-long trench separating the continental Greece from the Peloponnese islands, resulted in some spectacular photos which made a splash in Greek media. TPS is now widely known, and our arrival in Eretria on July 31 brought a crowd. The jam-packed agenda for this stop, which marked the beginning of the Terra Submersa expedition, starts with festivities in the village square, in honor of Konstantinos Kanaris, a hero of Greek independence. The next day, on the occasion of Swiss National Day, Mr. Amberg, Swiss Ambassador in Greece, came aboard the solar-powered boat to celebrate the fiftieth anniversary of the Swiss School of Archeology’s excavations, led by Karl Reber. There were visits to the boat, talks, and crushing heat...

The night of August 2, spent moored in a small, wild creek under the temple of Poseidon, was a welcome occasion to recharge before continuing on to Athens, our next stop, where the press conference announcing the launch of TerraSubmersa kept us just as busy. Lunch and evening festivities onboard, visits from the ministers of Culture and environment, groups, cocktails, speeches, the crew dressed to the nines and ready to welcome, explain, give tours, shine up… Of Athens, I only saw the Zea marina.

Luckily, the sailor’s life goes on, with a delightful little cruise towards the bay of Argolis. A short stop at Spetses, a tourist town renowned for its handcrafted wooded boats, although unfortunately we didn’t have time to visit the workshops, then onwards through the sinuous straits in front of the wonderful town of Poros. TPS, with its impressive size, slunk through moored ships, barges, ferries, and boats full of curious faces.

On August 7, we docked in the port of Nafplio. The largest town in Argolis, it was once the capital of ancient Greece, and is still a wonderful sight, with narrow paved streets, 18th and 19th century homes with blinds and balconies, gardens overflowing with bougainvilleas, illuminated fortresses, and a little fort on the island that marks the entry to the port. A place I will revisit (but maybe not during tourist season!) since we didn’t have time to truly enjoy it, as August 8 was probably the day TPS welcomed the most visitors onboard since its launch, with groups of 45 touring the boat every half hour!

August 9 was dedicated to installing aboard the measurement instruments we will be working with over the next two weeks.

Since the 10th august, we have been all set and anchored in the Bay of Kiladha. Here we will spend two weeks conducting a very thorough mapping of the coastal shelf, on the lookout for traces of habitats and prehistoric remains; more on that later too...

The full moon, the largest this year, has just set, and the sun rises over a sea that is as smooth as a mirror; life could be worse. Are you jealous? You should be.


A first day of measuring


When I started thinking about geophysical measures in the Bay of Kiladha, more than two years ago, PlanetSolar was not yet in my mind. First I met Dimitris Sakellariou, a Greek geologist specialized in marine research, at a workshop on Submerged Prehistoric Landscapes in Rome in the fall of 2012, and the project gradually evolved from that. It was then Jean-Dominique Vassalli, rector of the University of Geneva, who came up with the idea of involving the world’s biggest solar-powered boat. And here we are now. The deep blue sea of the Argolic Gulf is all around us. The instruments have been installed on board. The echo-sounder’s characteristic “ping” can be heard on the rear deck. TerraSubmersa’s scientific part is beginning...

Julien Beck

PlanetSolar reaches Athens (Greece) as part of the “TerraSubmersa” scientific expedition led by the University of Geneva


After a spectacular passage through the Corinth Canal (July 28) and a stop in Eretria (July 31 to August 2) celebrating the 50th anniversary of Swiss archeological excavations in this region, the world largest solar-powered boat docked in the port of Piraeus yesterday afternoon. This is the second stop on the itinerary of the TerraSubmersa scientific expedition, in collaboration with the University of Geneva (UNIGE), and the purpose is to explain the scientific objectives of this archeological mission, which will be launched on August 11 in the Argolic Gulf (Greece). The ship will reprise her role as a scientific platform, lending her exclusive features in service of the UNIGE researchers, whose goal is to explore the prehistoric landscapes submerged by the water, in order to reconstruct them and identify any potential traces of human activity.

Yesterday, the MS Tûranor PlanetSolar has reached the Port of Piraeus in Athens, her second stop in Greece as part of the TerraSubmersa expedition, which is a collaboration between UNIGE, the Neuchâtel Latenium, the Greek Service for Underwater Antiquities, the Swiss School of Archeology in Greece, and the Hellenic Center for Maritime Research. Like Eretria, Athens is a stop intended to emphasize the work that the archeologists will carry out in the Argolic Gulf from August 11 to 22, through public and private events.

This will allow the MS Tûranor PlanetSolar to continue to prove her uses, both as a platform for communication and events, and especially as a scientific platform. “PlanetSolar’s second life is not just an occasion to expand upon prestigious visits to New York, London, Paris, or Athens, or event for spectacular voyages like the crossing of the Corinth Canal, but it also offers the crew the pleasure of accomplishing the most diverse kinds of missions. Among these, TerraSubmersa, which is the highlight of our 2014 season, is certainly the most fascinating. The highly precise navigation we will need, together with the excitement of discovery… all in the magnificent setting of the Argolic Gulf.” declared Gérard d’Aboville, the ship’s captain, with great enthusiasm.

TerraSubmersa expedition: discovering submerged prehistoric landscapes

This Greco-Swiss expedition, led by Julien Beck, a researcher in the classical archeology department of UNIGE, aims to explore the prehistoric landscapes that have been submerged by the waters of the Argolic Gulf, in order to reconstruct them and to identify any potential traces of human activity.“Prehistoric underwater archeology and the study of ancient submerged landscapes are new fields of study in Greece,” Julien Beck explains.

This research will allow archeologists to reconstruct landscapes that have vanished underwater, and to understand the interactions between prehistoric man and the sea.

The MS Tûranor PlanetSolar will mainly be used to take geophysical measurements, which will allow the researchers to model the topography of ancient coastal zones, and to identify any potential traces of human activity. The Alkyon, a boat from the Hellenic Center for Maritime Research, will also be used for this work, which will be carried using state-of-the-art equipment (multi-beam sounder, lateral sweeping sonar, GPS, etc.). Subaquatic excavations will then be led by divers, thanks to a hydraulic aspirator which will remove a layer of protective silt from the site.

PlanetSolar across the Korinthos Canal, heading for science!


The Corinth Canal may be less well-known than its big brothers, Suez and Panama, and shorter too (it is only 6 km long), but passing through it on PlanetSolar will always be an intense memory. Despite knowing what was in store, I can assure you that the four or five metres that separated us from the cliff seemed very small indeed from the solar bridge! Although it was an imposing sight for the crew, the 70 or so minutes it took us to pass through the canal weren’t the most relaxing of our voyage!

And tonight, when we saw some of the photos that have already been posted on the internet, we were full of envy for the spectators who watched us pass along the bottom of this breathtakingly steep cutting from the top of a bridge.

We are now on our way to Eretria, which will be our first official stop on the TerraSubmersa scientific expedition led by the University of Geneva. Here we will celebrate the fifty archaeological excavations being carried out in Eretria by the Swiss School of Archaeology. Afterwards we will sail to Athens and Nafplio and then on to Kilhada, where the boat will be converted into a scientific platform as it begins to study the submerged prehistoric landscapes from 11 August onwards.


From Ajaccio to Korinthos


Crossing the Mediterranean during the summer, from Corsica to Greece, while hoping the sea doesn’t pitch one of its famous fits, is an experience that cannot be missed. It is best aboard a motorboat rather than a sailboat, and TPS is the perfect ship: no noise, no vibrations...


A slow passage in front of these mythical white cliffs, and thanks to the dinghy, we entered the the cave of Sdragonato; I did not dare try to fit TPS into it!

As for the town that sits on the cliff, no matter how many times you see it, it always looks just as improbable and splendid.


Instead of navigating through the main channel of the Strait of Bonifacio, we pass through the channels north of Sardinia, the steepness of which allows us to navigate right up close to the impressive cliffs.

On the Porto Cervo side, we see a parade of the most luxurious yachts in the world...


We arrive at Lipari, the main town on the island and on the eponymous archipelago. As we prepare to drop anchor in the little space available (the depth is breathtakingly steep), we see numerous, overburdened vessels detach from the coast and come towards us. I can’t help but be reminded of the Indian canoes coming to meet Captain Cook’s Resolution in a Polynesian bay. Disembarking, cannon fire, firecrackers and fireworks. What a welcome, far beyond our expectations! But no, we are surrounded, and then passed by; it turns out to be a religious celebration. The person we ask about this does not seem to remember what exactly the occasion is, since there are so many…


Under the volcano, at dawn. The valve opens regularly to release pressure but the monster is calm, and at its feet, the little town of Stromboli which mainly lives from a “VIP tourism”, seems prosperous. Still, the cracks on the walls of the church show that this area can be a bit precarious...


We encounter strange boats in the strait of Messina. Take a hull that is a dozen metres long, place the mast in the centre, a pylon that is 25 metres high, with a basket on top. Stick a walkway of about thirty metres long in front, and secure it all with a spiderweb of shrouds and stays, and now you are ready to fish swordfish. The pilot and two lookouts sit in the basket, from which commands come down to the harpooner who sits far ahead, at the end of the walkway.

Traditionally, these were rowboats. Even if powerful motors have replaced the rowing crew, it is still a very selective kind of fishing, and the harpooner chooses only good adult catches. How long will this form of fishing resist competition from fishing boats with nets, which is both intense and often illegal?

White calm

On my bunk, in the darkness of my windowless cabin.

I woke up, feeling something abnormal. For the first time since I am on board, I no longer feel any small movement, or any noise apart from the fan: no squeaking, which is an odd feeling aboard a boat, especially a carbon boat like this one, where the slightest wave that touches the central nacelle can be heard all throughout the ship. But I know that TPS is advancing, probably rather quickly...

I feel like I am on a spaceship, hurtling through space…

It is too unreal, I go outside. Outside there is only white calm, I search the horizon, a hot, downy mist blocks it out, and only the wrinkles in the water around the floats suggest that we are on a disk, and not inside a sphere.


On her way to Greece, PlanetSolar stops in Ajaccio


For three days, from July 10th to 12th inclusive, Monaco has been devoted to the solar boat races organised by Solar1, during which TPS served as the press and VIP boat. The sight of these firefly-like vessels gliding along without sound or turbulence was truly spectacular. TPS looked like a mother hen surrounded by her chicks. In the evening, TPS carefully backed up and docked at the magnificent, newly inaugurated Monaco Yacht Club, a building shaped like a giant motor yacht. On Sunday, July 13th all the grand yachts present sounded their sirens to send us off, making our departure quite emotional. Upon entering the basin, we made a 360 degree turn for our own farewell salute.

On July 15th, at 9 AM, TPS crossed through the stunning Passe des Sanguinaires, which marks the Northern entrance to the Bay of Ajaccio. The sun was still low in the horizon, which resulted in a perfect, magical light. We had left our mooring at the Bay of Menton just 21 hours earlier, enjoying a quick and comfortable crossing with sunny, calm seas. The Mediterranean at its best.

A few moments later, we passed in front of Myrte, an experimental installation with its field of solar panels. Here, the question of storing electricity is cleverly resolved thanks to the production of hydrogen, which may be a future solution for using this free, abundant, but unfortunately intermittent source of energy.

Our next stop is Corinth, in Greece, but since we have plenty of time to reach it, we decided to make a stop in the bay of Ajaccio. Our plans to moor discreetly, however, had not taken into account Corsican hospitality, and in fact the mayor’s office made amazing arrangements for this totally spontaneous stop, with an invitation to moor at the main wharf and to partake in the fantastic buffet they had set up there.

A sailor’s life sure is hard, isn’t it?