SHIP WITH DRILLING DERRICK WHICH HAS LOW COG

PURPOSE: A ship equipped with a drilling derrick in which center of gravity is low is provided to lower the centroid of a ship by folding a derrick during the navigation of the ship. CONSTITUTION: A ship comprises a drilling derrick. The drilling derrick is mounted on a drill floor. The drilling der...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LEE, JONG YEOL, CHOI, HAK LYUL
Format:	Patent
Sprache:	eng
Schlagworte:	CRANES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING EQUIPMENT FOR SHIPPING FIXED CONSTRUCTIONS HAULING HOISTING LIFTING LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORMING OPERATIONS RELATED EQUIPMENT SHIPS OR OTHER WATERBORNE VESSELS TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE: A ship equipped with a drilling derrick in which center of gravity is low is provided to lower the centroid of a ship by folding a derrick during the navigation of the ship. CONSTITUTION: A ship comprises a drilling derrick. The drilling derrick is mounted on a drill floor. The drilling derrick comprises an upper left derrick, an upper right derrick, and a lower derrick. The upper left derrick the upper right derrick are hinge-coupled on the lower derrick to be horizontally rotated and are folded by rotating horizontally and are mounted on the support.