| 摘要 |
A marine barrier system (10) is provided, comprising a partition (12) configured for being submerged within a body of water to serve as a barrier, the partition comprising a passage section (14), a top portion of the passage section being moveable between a raised barrier position wherein the top portion is at or near a surface of the water, and a lowered passage position wherein the top portion is submerged within the water to a sufficient depth to allow passage therethrough of a marine vessel. The barrier system further comprises a passage opening system (16) having a partition- carrying portion, the passage opening system being configured to maintain the top portion of the passage section in its raised barrier position when the partition- carrying portion is buoyant with respect to the water, and to maintain the top portion in its lowered position when the partition- carrying portion has an overall density greater than that of the water. |
