Stabilizing system for a crane vessel

Details Stabilizing system for a crane vessel Stabilizing system for a crane vessel

1978-01-13

1980-06-17

Blix, Trygve M.

Ships

Ballasting

Water tanks

114265, 212 3R, 9 8P, B63B 3903, B63B 4306

Patent

active

042078288

ABSTRACT:
A stabilizing system for a crane vessel of the twin hull semi-submersible type having a working platform supported above sea level by columns on submersible hulls. Water ballast compartments above sea level on the corner columns are discharged selectively in order to stabilize the vessel during handling of heavy outboard loads by cranes. The water is discharged through controlled valves of special construction. This control is regulated in dependence of measured values of the moment of force applied on the vessel by the crane load, and effects the operation with the help of a computer.
Lower water ballast compartments in the columns have an additional "passive" function and the water can be discharged therefrom by pressurized air or by pumping it into the upper ballast compartments.

REFERENCES:
patent: 1007348 (1911-10-01), Frahm
patent: 3537412 (1970-11-01), Henderson
patent: 3716154 (1973-02-01), Berg
patent: 3886886 (1975-06-01), Anders
patent: 3894503 (1975-07-01), McClure

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