Abstract: The invention relates to a splinterproof lining for a structure, such as an armoured vehicle. The splinterproof lining comprises several layers. The splinterproof lining includes an adhesive layer of solid organic material which is placed against a wall of the structure. The adhesive layer is between approximately 2 and 30 mm thick. An adjacent layer of a composite material with an organic matrix and a mineral or an organic reinforcement is placed in the immediate vicinity of the adhesive layer. The adjacent layer is approximately 5-30 mm thick. The splinterproof lining may also include a dispersion zone approximately 5 to 10 mm thick and filled with a polyurethane foam, with the dispersion zone placed between the adhesive layer and the adjacent layer. Additionally, an absorbing layer of double-drawn polyethylene approximately 5 mm thick, may be placed against the adjacent layer.

Abstract: This invention relates to a small scale semi-submersible boat for naval combat comprising a hull of which a first, water-tight part is insubmersible and a second part is submersible.In the submersible part of the hull is accommodated at least one balloon or caisson serving as float which has a wall capable of being perforated and is inflated by means of a gas to enable the boat to float, the said boat also having a device for perforating the wall of the aforesaid balloon or caisson of a similar boat of an opponent, so as to damage the buoyancy of the opponent's boat.