Construction and launch barge and method of producing and instal

Details Construction and launch barge and method of producing and instal Construction and launch barge and method of producing and instal

1975-05-02

1977-04-05

Blix, Trygve M.

Ships

Building

114283, 114 31, 114267, 114125, B63B 900

Patent

active

040155544

ABSTRACT:
A construction and launch barge having a shallow draft hull with a construction deck supporting at its center a floatable offshore structure both during construction thereof and during the towing of the barge to the site where the offshore structure is to be installed. In order to maintain stability, a plurality of hollow column stabilizers are provided on the barge; these may be, e.g., four, one adjacent to each corner of the barge and extending up high thereabove. A ballast compartment helps determine the desired waterline of the vessel, a mechanism being provided to displace the water therein by air or to displace the air by water. The column stabilizers are sufficiently high and occupy sufficient area for assuring the proper location of the metacenter of the fully loaded barge. The structure enables the construction of large offshore structures of concrete in relatively shallow water and enables towing the offshore structure across relatively shallow water to a desired location and then separating the barge from the offshore structure by sinking the barge to a sufficient depth, releasing the then-floatable offshore structure from the barge, and then displacing the barge away from the offshore structure. Then the barge is raised again and returned to shore. The offshore structure may then be lowered into its operating location.

REFERENCES:
patent: 3541588 (1970-11-01), Ragland
patent: 3610192 (1969-01-01), Mauritzen
patent: 3736898 (1973-06-01), Yamura
patent: 3756179 (1973-09-01), Laffont

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