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Ship with a protection system making it unsinkable

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A watercraft, e.g. a passenger vessel, a ferry, a hazardous-substance freighter or the like, with a deck and with a buoyancy chamber in the deck, it being the case that, in a first operating state, the buoyancy chamber contains air, is characterized in that, in a second operating state, the buoyancy chamber is filled with a foam which has a high cell volume with closed cells and a dimensionally stable state of aggregation.

Financial information

The unvention relates to ship safety. There are further applications belonging to the portfolio:
EP 2540612 A1 pdf-document
EP 2540612 Recherchebericht
Making ships almost unsinkable is a good argument for cruises, containers and other huge vessels on sea.

We prefer sale but are open to all other ideas.

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