When a jack-up vessel is elevated, it is subjected to various adverse forces that need to be considered. The legs of the jack-up barge play a crucial role in resisting these forces and ensuring the stability. Wind and sea: When the barge is elevated, it is exposed to the forces of wind and sea. The […]
When the hull is elevated, its weight is transfered through the rack to the pinions and jacking tower. Due to the slight movement caused by weather elements, weight is burdening the pinions, especially lower ones. The same happens when jackup is in afloat condition, and legs are raised. Horizontal movement of the legs is affecting
RPD is the measurable difference in the vertical position of the chords relative to one another within a lattice leg. It occurs due to an uneven loading of the leg chords when the spud can is unevenly supported or when the spud can is subject to a lateral (horizontal) load. The uneven loading in a
Jack-up barges, due to their diverse applications, predominantly feature two design types for their legs: CYLINDRICAL (tubular) and TRUSSED (lattice). Thrussed (Lattice) leg Cylindrical (Tubular) legs The cylindrical leg design is characterized by its simplicity – such legs are hollow steel tubes. This is a more traditional design, commonly seen on jack-ups operating in shallow
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