Transport vessel for floating onloading and offloading of cargo

Details Transport vessel for floating onloading and offloading of cargo Transport vessel for floating onloading and offloading of cargo

1974-10-17

1976-01-27

Blix, Trygve M.

Ships

Ice boats

B63B 3528

Patent

active

039345300

ABSTRACT:
A vessel for transporting floatably onloaded and offloaded cargo (typically barges) is disclosed. A hull having a well deck surrounded on three sides by the bow, port and starboard vessel's sides has a plurality of ballast tanks adapted to be filled with sea water. When the ballast tanks are flooded, the hull is in a loading configuration wherein the well deck is submerged so that cargo can be floated over the well deck and positioned thereon. At this submerged position of the well deck, the continuous sidewalls of the vessel are interrupted by a series of horizontally elongate water level ports constituting a large interruption of the water plane of the vessel. These ports are concentrated in the area of the forward well deck bulkhead and impede the formation of standing waves within the vessel whereby destructive motion between the carrier vessel and the floating cargo can be prevented from damaging the carrier vessel, floating cargo, or both. As the vessel is raised to bring the well deck in contact with the floating cargo, these surge ports are raised above the waterline and no longer communicate the well deck to the sea. Thereafter, communication to the sea for drainage only is provided by vertical freeing ports, constituting a relatively small interruption to the water plane of the vessel.

REFERENCES:
patent: 3186369 (1965-06-01), McLenna et al.
patent: 3191568 (1965-06-01), Schroeder et al.
patent: 3299846 (1967-01-01), Jarlan
patent: 3338205 (1967-08-01), Leavitt
patent: 3793974 (1974-02-01), Bylo
patent: 3823681 (1974-07-01), Cushing et al.

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