Lift-on/lift-off

Lift-on/lift-off (LoLo, sometimes LOLO, LO/LO or Lo/Lo)[1] ships are cargo ships with on-board cranes to load and unload cargo. Ships with cranes or other cargo handling equipment on-board are also termed geared vessels.

Cranes on a LoLo vessel
Flora Delmas, a LoLo vessel
Container with a crane on it

As container ships usually have no on-board cranes or other mechanism to load or unload their cargo, they are therefore dependent on dockside container cranes to load and unload. However lift-on/lift-off vessels can load and unload their own cargo unassisted. Lift-on/lift-off vessels can operate out of docks with no dockside cargo handling equipment.

"In May 2010 the Office of Naval Research (ONR) conducted a ... at-sea demonstration of their Large Vessel Interface Lift-on/Lift-off (LVI Lo/Lo) crane system in sea state 3 conditions. The LVI Lo/Lo demonstrator is an advanced motion-compensated, at-sea cargo transfer system. The embedded technologies combine to provide tagline free six degrees-of-freedom control of the payload."[2]

References
  1. "Lift-on/Lift-off (LO/LO) Ships". GlobalSecurity.org. Retrieved 13 April 2014.
  2. Large Vessel Interface Lift-on/Lift-off (LVI Lo/Lo) crane system, youtube.com, 21 October 2010, retrieved 20 December 2017. – Video (2:30). @1:40/2:30 the compensation movement is shown in fast motion.


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