Floating anchor usable partic. in refloating stranded ships - comprises rectangular impervious surface retaining confined water attached by cables to flotation elements allowing for sea undulations

摘要

Floating anchor, partic. for refloating stranded ships and consisting of buoyancy elements to which are attached an impervious surface and ballast, incorporates passive buoyancy elements e.g. in the form of poles at the base of which hangs a suspension cable, the lower end of which is attached to the upper part of the impervious surface designed to retain confined water. Ballast causes the centre of gravity of the floating anchor to be disposed under the centre of buoyancy, making allowance for the upper buoyancy elements to which the ballast is connected and leading to a vertical force limiting the heaving of the impervious surface. Impervious surface is rectangular, of horizontal dimensions at least ten times greater than the vertical dimensions. It is held at its two vertical edges by two sheets of cables, disposed in vertical planes, regrouped into a haulage cable which is wound on a winch, integral with the ship being refloated, and on which the pressure exerted by the confined water is less than 10 kg/m2.