ANORDNING OCH SETT VID ASTADKOMMANDE AV EN ANORDNING FOR AVSPERRNING AV EN VATTENPASSAGE

PCT No. PCT/SE86/00188 Sec. 371 Date Nov. 19, 1986 Sec. 102(e) Date Nov. 19, 1986 PCT Filed Apr. 23, 1986 PCT Pub. No. WO86/06465 PCT Pub. Date Nov. 6, 1986.A barrier arrangement for blocking a water passage or channel against the admission of a foreign or unfamiliar object, such as underwater vesse...

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Zusammenfassung:PCT No. PCT/SE86/00188 Sec. 371 Date Nov. 19, 1986 Sec. 102(e) Date Nov. 19, 1986 PCT Filed Apr. 23, 1986 PCT Pub. No. WO86/06465 PCT Pub. Date Nov. 6, 1986.A barrier arrangement for blocking a water passage or channel against the admission of a foreign or unfamiliar object, such as underwater vessels, frogmen and the like. The arrangement comprises a net (1) of considerable tensile strength intended to be stretched across the water passage. The bottom edge of the net (1) is anchored to the sea-bed and the net can be activated from a passive state, in which it may lie on the sea-bed, to an active barrier state. To this end, the upper edge of the net (1) is connected to an inflatable and deflatable lifting hose (3) which when evacuated is essentially flat and which when inflated is able to lift the upper edge of the net towards the surface of the water, so as to stretch the net between the sea-bed and the surface of the water. The invention also relates to a barrier net and to an anchoring means for use with the arrangement.