As a lover of the sea, I can’t help but be concerned about the way we treat our most precious resource. The facts are there for all to see, below are some of the things that have struck me.

Currently, about 8 million tonnes of waste are dumped into the marine environment each year. This figure is expected to increase further over the coming decades, with serious implications for the marine environment and human health, unless improvements are made in waste management and its prevention.

What can be done to limit this problem? Do we have solutions to prevent, monitor and cleanse our seas of marine litter? If so, which ones and how many? In fact, there are tens of thousands of solutions, but of these, only a hundred or so have been considered as innovative solutions, other than simple recycling or reduction of waste production, to confront the problem.

Ever since I was a child, I have been very interested in shipping. I remember that I couldn’t understand why all boats weren’t powered like my toy…with batteries.

Firstly, two new ships will be joining the fleet, with a combined LNG (Liquefied Natural Gas) and electric propulsion system. This “optimised hybrid” system should eventually enable a total reduction in energy consumption and greenhouse gas emissions of 10 and 20% to be achieved, according to the company, a performance that is “set to progress as and when shore power sockets are installed in the ports allowing batteries to be recharged by shore power”.

If LNG is considered very encouraging, with the energy giant Shell having recently placed an order for 40 tankers, the hybrid version is much more promising. Indeed, it is conceivable that with the expected performance of new types of batteries (Sodium-Ion, Lithium-Sulphur, solid state batteries), new fully electric ships will emerge.

Brittany Ferries, however, is looking one step further. In the 1970s, the Soviet army developed a type of aircraft called the Ekranoplan, which was designed primarily for military use. It was designed to take advantage of a well-known aerodynamic effect: the ground effect.

Without wishing to go into the physical and technical details here, which may bore my readers, it should simply be remembered that an aircraft flying very low on a flat surface (ideally water) uses much less energy. Man has taken the example of certain large birds that take advantage of this effect (swans, giant petrels, kori bustards, etc).

The next step for Brittany Ferries is therefore to bring the Soviet Ekranoplan up to date. This will be done by joining forces with the start-up Regent (Regional Electric Ground Effect Nautical Transport) based in Boston, USA.
Indeed, the French maritime operator aims to create a new mode of fast, sustainable and efficient maritime transport, the Seaglider.

A partnership agreement has been signed to participate in the design and development of Seagliders with a capacity of 50 to 150 passengers sailing between the UK and France by 2028. Regent expects the first commercial crossings to be on smaller electric boats from 2025.

A ferry… flying at 290km/h!

The Seaglider principle combines the manoeuvrability of ferries with the aerial efficiency of hovercraft and the speed of aircraft. These “gliders” on the sea, which could connect existing ports, should reach the impressive speed of 290 kilometres per hour.

After leaving the harbour, the Seaglider rises on its foils, and in the open sea it takes off on its air cushion, flying at a low altitude, which allows for comfortable sailing over the waves to the port of arrival, where it lands again on its foils, ensuring passenger comfort. In the open sea, it launches on a cushion of air to the port of arrival. Electric propeller motors on the wings provide sufficient thrust for take-off, and regulate the necessary airflow generating sufficient lift for take-off and flight.

Seagliders would therefore be a very efficient mode of transport, capable of moving relatively large loads over long distances and at high speeds. The energy required would be provided exclusively by electric batteries recharged at the dockside.  Safety would be ensured by redundant propulsion systems, as well as by new generation radars that would automatically detect and bypass obstacles at sea.

I am excited about this type of technical innovation, especially since it’s associated with one of my great passions; the sea. I am looking forward to seeing a Seaglider in action!

John Stuart Mill, in the 19th century, defined utilitarianism as a doctrine that makes the useful, that which serves life or happiness, the principle of all values in the field of knowledge as well as in that of action.

For most of us, and I am obviously no exception, energy is paramount in our professional and leisure activities. Of course, I personally favour electrical energy, but the question of its origin always remains. In Europe, just over 30% of energy comes from nuclear sources.

I have already mentioned this subject in a previous article explaining why nuclear fusion energy will replace fission energy in a few decades, without waste and without risk. In the meantime, we will have to continue to manage the waste resulting from fusion. But it is very surprising to me to see that, as much as humanity can show vanity and presumptuousness, sometimes it does not believe in itself or in its capacities.

For example, the first thing that comes to mind and that we hear in the media is that it will take hundreds of thousands of years to significantly reduce the danger of nuclear waste. So we are putting future generations at risk. Really?

By being a little provocative, can we seriously think that radioactivity discovered only in 1895 by Henri Becquerel will remain in its current state of research concerning, in particular, waste? If in a little over a century we have been able to domesticate atomic fission and soon fusion, there is no reason why in future years a means will not be found to eliminate the danger of waste.  In the meantime, recycling channels are at work, and currently in France 96% of waste is recovered/reused, only 4% is so-called “ultimate” waste that needs to be stored.

Some countries, such as Finland, which obtains almost 32% of its energy from the atom, are devising intelligent strategies, even if mankind is unable to recycle 100% of its waste. Firstly, the location of a nuclear power plant is determined by where the waste is stored, i.e. in the immediate vicinity. Secondly, the safety of the burial of the waste must be envisaged for a very long period of time, even if future generations forget where it is located.

Accordingly, Finland has already begun digging a tomb designed to withstand the next ice age.  It lies exactly 437 m below the ground on Olkiluoto, an island in the Baltic Sea on the west coast of Finland. There, special guests will rest: radioactive waste that will remain so for hundreds of thousands of years. The temperature is a constant 11 degrees Celsius.

The underground labyrinth of 200 tunnels will eventually be almost 70 km long. Up to 3,250 spaces will be created where the so-called “capsules” will be stored. These will contain the used nuclear fuel. Onkalo (the translation of Finnish means burrow), the name of this site, is a veritable sarcophagus.

Fourfold protection is in place because the used fuel packages, which contain uranium and other radioactive elements such as plutonium, will be inserted into a steel cylinder, which is itself covered by a 5 cm thick copper cylinder to prevent corrosion.

The minimum duration of this protection is 100,000 years, making it the longest-lasting man-made object. The capsules will then be buried in holes at regular intervals in the Onkalo tunnels. They will be surrounded by blocks of bentonite, a type of clay found underground. Once the capsules have been placed, the tunnels themselves will be gradually filled with clay. Above this, 400 m of extremely stable granitic rock, which has not moved for two billion years.

For the time being, therefore, there is no ideal solution while waiting for the “energy of the stars”, i.e. fusion. Thus, the usefulness (no pun intended) of remembering the teaching of John Stuart Mill. I cannot resist adding a thought from Marie Curie:

“In life nothing is to be feared, everything is to be understood.”