Sea tent

Submersible container apparatus isolating from the surrounding water a selected water bottom area together with a column of water extending upwardly from said bottom area to the surface comprising a flexible wall member closed upon itself bounding said selected water bottom area and extending up to the water surface, and defining the lateral and vertical limits of said column of water, said flexible wall member including a lower portion having a hollow base member secured thereto and an upper portion joined to said lower portion, said upper portion having a cross-sectional area less than that of said lower portion, and a balloon valve means disposed in the interior of said flexible wall member at the juncture of said lower portion and said upper portion whereby water in said lower portion is prevented from passing into said upper portion.

Container apparatus for isolating from the surrounding water a selected water bottom area together with a column of water extending upwardly from said bottom area to the surface, comprising endless flexible wall means bounding said selected water bottom area and said column of water, said endless wall means being closed upon itself and defining the lateral and vertical limits of said column of water, flexible tubular base means secured to an end of said wall means and containing fill means for holding said base member under the influence of gravity against the water bottom bounding said selected water bottom area, inflatable float means secured to the other end of said wall means, anchoring means connected to said wall means in position relative to said selected water bottom area, said anchoring means including a plurality of weight means lying in a selected pattern on the water bottom exteriorly of said selected water bottom area, and securing means extending from said weight means and connected to said endless wall means.

Submersible container means in combination with a land mass for isolating, from a liquid environment a selected liquid bottom area, together with a volume of liquid extending upwardly from said selected liquid bottom area, comprising in combination submersible container means connected to said land mass, said submersible container means comprising a flexible enclosed fluid filled member forming a linear wall, each end of which is in contact with said land mass, the lowermost portion of said enclosed member in contact with said liquid bottom adjacent said selected liquid bottom area, fill means contained within said enclosed member to hold the bottom of said defined wall against the liquid bottom, anchor means engaging said member to hold said defined wall in a substantially fixed position, and at least one float member contained within said member to raise and lower the top of said defined wall in response to changes in the liquid level.

A submersible container apparatus for isolating from adjacent water, a selected water bottom area together with an area extending upwardly from said selected bottom area to the water surface, comprising a flexible closed wall member bounding a selected water bottom area, a hollow base member secured to the lowermost portion of said wall member, said hollow base member being adapted to contain fill means for holding said base member under the influence of gravity against a water bottom portion bordering said selected water bottom area, and a plurality of bifurcated members secured to said hollow base member, each of said bifurcated members pivotally supporting a holding member so positioned as to be responsive to the pressure of water currents for assisting in holding said base member against said water bottom portion.