Transfer system for use between platforms having relative...

Details Transfer system for use between platforms having relative... Transfer system for use between platforms having relative...

B - Operations, Transporting

63

B

212/23.1

B63B 23/00 (2006.01)

Patent

CA 1167804

ABSTRACT A carrier adapted to move between a movable vessel, such as a boat, and a stationary platform. The carrier has an extendable and retractable intermediate uphaul line adapted to be connected to a crane on the platform. It also has a downhaul line connected between the carrier and the vessel. When the carrier is being lifted from the vessel, the downhaul line is payed out at a controlled rate with the uphaul line extending and retracting to keep the carrier out of contact with the vessel which may be rising or falling due to wave action of the water. At a predetermined elevation, the tension in the downhaul line is decreased so that the uphaul line retracts to move the carrier out of the area of possible contact with the vessel. The reverse operation is followed to move the carrier from the platform to the vessel. Thus, the invention makes it possible to transfer from a vessel personnel or cargo without risking that such personnel and cargo will be impacted if the vessel is carried upwardly by a large wave shortly after the liftoff of the personnel or cargo from the vessel.

391586

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