UNDERSEA OBSERVATION GALLERY
An undersea observation gallery comprising an annular chamber having sight windows in the outer peripheral wall thereof and an independent combination ballast tank and pontoon connected to the top of said annular chamber and communicated with said annular chamber by a stairway, said annular chamber...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | An undersea observation gallery comprising an annular chamber having sight windows in the outer peripheral wall thereof and an independent combination ballast tank and pontoon connected to the top of said annular chamber and communicated with said annular chamber by a stairway, said annular chamber being submerged or surfaced when water is charged into or discharged from said combination ballast tank and pontoon. |
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