Title:
REMOVABLE UNDERWATER FAIRLEAD AND METHOD
Document Type and Number:
WIPO Patent Application WO1999037531
Kind Code:
A3
Abstract:
A fairlead (10) is disclosed that may be remotely uninstalled and reinstalled while the fairlead (10) is underwater and without ballasting the vessel far enough to raise the fairlead above the water surface. A fairlead pivot pin (16) is removably disposed in apertures (24, 26) in the first and second fairlead foundation supports (20, 22) and in a bore (15, 17) through the fairlead body (14). A pivot pin retainer (32) is attached to one end of the pivot pin (16). A strongback apparatus (72, 82, 84) is coupled to the pivot pin retainer (32) by means of the at least one twistlock (78, 80). The pivot pin (16) is broken loose by pulling on the pivot pin retainer (32) an directing the reaction force to e.g. upstanding members (64, 66) on the first fairlead foundation support (20) providing ram landing surfaces (68, 70) for the telescoping cylinders (110, 114) of the strongback apparatus (72, 82, 84).
Inventors:
WUDTKE DONALD J
MELDER ROBERT C
MELDER ROBERT C
Application Number:
PCT/US1999/001540
Publication Date:
June 15, 2000
Filing Date:
January 26, 1999
Export Citation:
Assignee:
CONTINENTAL EMSCO CO (US)
International Classes:
B63B21/10; B63C11/52; (IPC1-7): B63B21/10; B63C11/52
Domestic Patent References:
| WO1998040306A1 | 1998-09-17 |
Foreign References:
| DE2935591A1 | 1981-03-12 | |||
| GB2286173A | 1995-08-09 |
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