METHOD OF BUILDING SEABORNE SELF-LIFTING PLATFORM Russian patent published in 1997 - IPC

FIELD: hydraulic engineering. SUBSTANCE: when platform is manufactured at plant, sections of support columns are connected and welded; then reservoir consisting of two halves is connected to it and tank of bearing shoe is used as pontoon, after which support column (fully assembled) is towed to deep water where self-lifting platform is located. Support column is ballasted, then it is set in vertical position to rest against bottom. Then shaft of self-lifting platform is brought above support column which is brought into shaft by means of floating crane till it is engageable with lower-hoist mechanism. EFFECT: enhanced reliability. 4 dwg