Friday, January 28, 2011

Large Vessel Interface Lift-on/Lift-off (LVI Lo/Lo) crane

*Note, this is a follow on to the "LCS Tender" post. What do we need to make it work? How about something as mundane as a good crane to transfer gear, containers and such at sea in almost any sea state. The Office of Naval Research already has it covered with the LVI Lo/Lo Crane.



via Office of Naval Research...

What Is It?

The LVI Lo/Lo crane is an advanced motion-compensated at-sea cargo transfer system that will be able to transfer fully-loaded cargo containers between ships at sea in Sea State 4 and below by providing six degrees-of-freedom control of the payload without taglines.

How Does It Work?

The system enables the rapid and safe at-sea transfer of standard ISO containers and other heavy loads from military and commercially available ships onto the Sea Base. Capability details include:
  • Ability to maintain optimal cargo throughput rates through Sea State 4
  • Ability to transfer cargo between two ships directly alongside each other at zero forward speed or underway at slow speed in the open ocean.
  • Motion sensing and compensation for the ships and/or the cranes will allow safe and efficient transfer of cargobility to transfer car

What Will It Accomplish?

The LVI Lo/Lo crane is a key technology for enabling the fl ow of joint logistics through the Sea Base. Currently, to off -load a container ship,
it must have a safe deep-water port.  By adding the LVI Lo/Lo crane to the Sea Base, the container ship can be off -loaded at sea, with the containers transferred to other modes of transportation for the final leg to the shore.  This eliminates the need for a secure deep-water port and enables the flow of containerized logistics through the Sea Base to the shore.

2 comments :

  1. modern heavy compensating cranes a been on commercial ships for a long time. ONR is not invnenting anything. And what they came up with appears to be over-specified.

    While skin to skin cargo ops have been done for decades, none to my knowledge were done UNDERWAY?

    Where modern cranes ARE needed are on LPDs and LSDs so that they can conduct Lo/Lo operations to ships and ligheterage alongside. Most of that is retrofitting equipment but the LPD17 may loose some its questionable stleathiness?

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  2. WRT LPD17, you could probably install only the anchor and set the rest as needed. Say, for instance, getting a trailer crane from below deck. You'd only loose most of your "stealth" when in use.

    I'm not sure I'm being clear enough. Sorry.

    Take care. Ferran.

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