Title:
MOORING ARRANGEMENT FOR FLOATING STRUCTURE
Document Type and Number:
Japanese Patent JPS6231590
Kind Code:
A
Abstract:
An anchoring system for semisubmersible drill rigs is described which includes a wire rope-chain cable anchor line and in which system components co-operate to convey the junction of the wire rope and chain cable smoothly over a fairlead sheave. The connector joining the anchor line has a narrow end in which the rope is rigidly retained, a large end at which a chain end link is pivotally retained, and a radially symmetric, generally concave surface extending between the two connector ends. The outer surface of the connector is shaped to seat against the central hub of the fairlead sheave in a predetermined orientation in which a limited fixed bend angle is formed between the connector and the wire rope. The geometry of the connector naturally biases the connector to seat against the central hub of the fairlead sheave in the predeterminted orientation during hauling in of the anchor line. A collar fitted about the penultimate chain link displaces the large connector end from the sheave during paying out of the anchor line until the outer connector surface can be drawn by the wire rope into engagement with the sheave. Wire rope bending is accordingly minimized without significantly enlarging or altering the size of the fairlead sheave.
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Inventors:
RONARUDO BARANTAIN
MAATEIN MAARI
MAATEIN MAARI
Application Number:
JP10751986A
Publication Date:
February 10, 1987
Filing Date:
May 10, 1986
Export Citation:
Assignee:
JOHN T HEPUBAAN LTD
International Classes:
B63B21/50; B63B21/22; F16G11/00; F16G15/00; (IPC1-7): B63B21/50
Attorney, Agent or Firm:
Kazuo Sato