A retractable folding leg of a jack-up rig is disclosed. According to an embodiment of the present invention, the retractable folding leg of a jack-up rig having a platform having a plurality of jack houses comprises: a plurality of first legs installed to be vertically moved on a jack house side; and a second leg installed to be vertically moved inside the first leg.
TELESCOPIC TYPE RETRACTABLE LEG FOR JACK UP RIG
2015-09-23
Patent
Elektronische Ressource
Koreanisch