Method and apparatus for docking and undocking in lighter-aboard

Details Method and apparatus for docking and undocking in lighter-aboard Method and apparatus for docking and undocking in lighter-aboard

1979-08-15

1982-03-16

Halvosa, George E. A.

Ships

Mother ship, floating landing platform, and harbor

Vessel carrier

B63B 3540

Patent

active

043195407

ABSTRACT:
A method and apparatus for facilitating the entry or docking and exit or undocking of lighters into and from the docking space of a lighter-aboard-ship vessel of the floater type and for preventing entry of foreign objects into the docking space includes drawing water out of the docking space during entry of the lighter into the docking space, the docking space having been previously filled with water in an amount sufficient to permit the lighter to float therein, in an amount such that outflow of water from the docking space in the region of the gap defined between the lighter and the docking space gate is reduced to an extent whereby substantially no resistance to the entry of the lighter into the docking space will occur. During exit of the lighter from the vessel docking space, water is introduced into the docking space in an amount such that a small outflow of water from the docking space in the region of the gap defined between the lighter and the docking space gate is maintained. Appropriate apparatus is disclosed for drawing and introducing water from and into the docking space as described above. In this manner, the flow of water from and to the docking space which normally accompanies the entry and exit of a lighter into and from the docking space and its consequent resistance to such entry and exit are substantially eliminated and, instead, a relatively small outward flow from the docking space is provided during both entry and exit of the lighter.

REFERENCES:
patent: 3191568 (1965-06-01), Schroeder et al.
patent: 4147123 (1979-04-01), Kirby et al.

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