To reduce her footprint to a strict minimum, the Manta will be powered not only with propellers driven by electric motors but also with automated riggings.
The electricity needed to power these riggings and electric engines will be supplied by conventional generators, whose presence is necessary to guarantee the safety of the crew, but also by on-board equipment for the production of energy from renewable sources (wind turbines, hydro-generators and photovoltaic solar panels), and by the waste-to-energy conversion unit.
With her hybrid propulsion system, the Manta offers the necessary mobility to rapidly reach river mouths and estuaries where floating plastic waste is still concentrated by winds and currents and not broken down yet or didn’t begin their oceanic drift and dispersal.
The Manta can also quickly operate anywhere in the world in case of natural disaster (hurricane, tsunami, etc.) in high density plastic pollution areas to collect floating macro-waste before they sink in the oceans.
The large energy production and storage capacity ( ~100 tons of batteries) on board as well as the hybrid propulsion system (sails and engine) offer the Manta a maximized autonomy to move or during her work phases.
The focus has been put on the waste collection system. Our engineering consulting firms are concentrating their efforts to provide an innovative and efficient solution.
The collectors, between the two hulls, will have the capability to quickly bring waste on board for treatment in the onboard plant.
To sorting, shredding, packaging and storing or converting plastic waste into energy.
The sorted waste is then transported by conveyors to shredders and is conditioned before being either sent to the waste-to-energy conversion unit or to the big bag system. Big bags will be stored on the Manta decks.
The Manta can store the equivalent of 150 tonnes of waste of all kinds on her decks or in her hulls before bringing them ashore for treatment in waste treatment or recycling units, or for conversion into energy on board during her future missions.
A waste-to-energy unit is installed on board to convert collected waste in electricity. This unit includes waste conditioning equipment aimed mainly at drying and homogenizing waste. The conditioned waste is then converted in gas and oils through a “pyrolysis”, “pyro-gasification” or “catalytic depolymerization” process still in research, before being converted to electricity.
With her cranes, the Manta can also lift bigger floating waste (drift nets, containers lost by cargo ships, waste coming from land, etc.) to store them on board and be brought back on land to be processed by dedicated sectors.
In order to improve the knowledge in ocean plastic pollution and to strengthen the prevention of pollution, the Manta offers on-board scientific facilities that will will allow the scientific teams on board to geo-position, quantify and qualify waste during the collection campaigns. These data will be supplied to the international scientific community in Open Data.