Ships – Mooring device – Boom type
Patent
1987-04-27
1989-02-07
Peters, Jr., Joseph F.
Ships
Mooring device
Boom type
114293, B63B 2100
Patent
active
048024317
ABSTRACT:
An offshore fluid transfer system is described for transferring fluid between an underwater pipe and a dynamically positioned vessel at the sea surface, which is relatively lightweight and economical. The system includes a riser having an upper end attached to the vessel and a lower end having a chain table held by chains extending in catenary curves to the sea floor and weighted by a weight hanging by the chain table. The riser supplied substantially the only mooring force most of the time, while thruster equipment on the vessel supplies sufficient additional force a small amount of the time to limit vessel drift in violent storms. The upper several meters of the riser is a rigid pipe, and an instrument that measures tilt of the pipe indicates the amount and direction of drift of the vessel.
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Amtel, Inc.
Peters Jr. Joseph F.
Swinehart Edwin L.
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