Lift-on/lift-off

Last updated
Cranes on a LoLo vessel Blick an Deck.jpg
Cranes on a LoLo vessel
Flora Delmas, a LoLo vessel Flora Delmas.jpg
Flora Delmas, a LoLo vessel
Container with a crane on it Feeder ship Maersk Ferrol.jpg
Container with a crane on it

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.

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]

Related Research Articles

<span class="mw-page-title-main">Containerization</span> Intermodal freight transport system

Containerization is a system of intermodal freight transport using intermodal containers. Containerization, also referred as container stuffing or container loading, is the process of unitization of cargoes in exports. Containerization is the predominant form of unitization of export cargoes, as opposed to other systems such as the barge system or palletization. The containers have standardized dimensions. They can be loaded and unloaded, stacked, transported efficiently over long distances, and transferred from one mode of transport to another—container ships, rail transport flatcars, and semi-trailer trucks—without being opened. The handling system is completely mechanized so that all handling is done with cranes and special forklift trucks. All containers are numbered and tracked using computerized systems.

<span class="mw-page-title-main">Port</span> Maritime facility where ships may dock to load and discharge passengers and cargo

A port is a maritime facility comprising one or more wharves or loading areas, where ships load and discharge cargo and passengers. Although usually situated on a sea coast or estuary, ports can also be found far inland, such as Hamburg, Manchester and Duluth; these access the sea via rivers or canals. Because of their roles as ports of entry for immigrants as well as soldiers in wartime, many port cities have experienced dramatic multi-ethnic and multicultural changes throughout their histories.

Container ship Ship that carries cargo in intermodal containers

A container ship is a cargo ship that carries all of its load in truck-size intermodal containers, in a technique called containerization. Container ships are a common means of commercial intermodal freight transport and now carry most seagoing non-bulk cargo.

<span class="mw-page-title-main">Crane (machine)</span> Type of machine

A crane is a type of machine, generally equipped with a hoist rope, wire ropes or chains, and sheaves, that can be used both to lift and lower materials and to move them horizontally. It is mainly used for lifting heavy objects and transporting them to other places. The device uses one or more simple machines to create mechanical advantage and thus move loads beyond the normal capability of a human. Cranes are commonly employed in transportation for the loading and unloading of freight, in construction for the movement of materials, and in manufacturing for the assembling of heavy equipment.

<span class="mw-page-title-main">Intermodal freight transport</span> Cargo transport using multiple containers

Intermodal freight transport involves the transportation of freight in an intermodal container or vehicle, using multiple modes of transportation, without any handling of the freight itself when changing modes. The method reduces cargo handling, and so improves security, reduces damage and loss, and allows freight to be transported faster. Reduced costs over road trucking is the key benefit for inter-continental use. This may be offset by reduced timings for road transport over shorter distances.

<i>Sevmorput</i> Nuclear powered cargo ship

Sevmorput is a Russian nuclear-powered cargo ship. The 1988-built vessel is one of only four nuclear-powered merchant ships ever built and, after returning to service in 2016 following an extensive refit, the only such vessel to remain in service as of 2023.

<span class="mw-page-title-main">Stevedore</span> Occupation of loading and unloading ships

A stevedore, also called a longshoreman, a docker or a dockworker, is a waterfront manual laborer who is involved in loading and unloading ships, trucks, trains or airplanes.

A lighter is a type of flat-bottomed barge used to transfer goods and passengers to and from moored ships. Lighters were traditionally unpowered and were moved and steered using long oars called "sweeps" and the motive power of water currents. They were operated by skilled workers called lightermen and were a characteristic sight in London's docks until about the 1960s, when technological changes made this form of lightering largely redundant. Unpowered lighters continue to be moved by powered tugs, however, and lighters may also now themselves be powered. The term is also used in the Lighter Aboard Ship (LASH) system.

<span class="mw-page-title-main">Container crane</span>

A container crane is a type of large dockside gantry crane found at container terminals for loading and unloading intermodal containers from container ships.

<span class="mw-page-title-main">Lighter aboard ship</span>

The lighter aboard ship (LASH) system refers to the practice of loading barges (lighters) aboard a bigger vessel for transport. It was developed in response to a need to transport lighters, a type of unpowered barge, between inland waterways separated by open seas. Lighters are typically towed or pushed around harbors, canals or rivers and cannot be relocated under their own power. The carrier ships are known variously as LASH carriers, barge carriers, kangaroo ships or lighter transport ships.

<span class="mw-page-title-main">Gantry crane</span> Type of overhead crane used in industrial environments

A gantry crane is a crane built atop a gantry, which is a structure used to straddle an object or workspace. They can range from enormous "full" gantry cranes, capable of lifting some of the heaviest loads in the world, to small shop cranes, used for tasks such as lifting automobile engines out of vehicles. They are also called portal cranes, the "portal" being the empty space straddled by the gantry.

<span class="mw-page-title-main">Port of Ashdod</span> Port in Israel

The Port of Ashdod is one of Israel's three main cargo ports. The port is located in Ashdod, about 40 kilometers south of Tel Aviv, adjoining the mouth of the Lachish River. Its establishment significantly enhanced the country's port capacity. It handles the largest volume of cargo containers annually of all Israeli ports. Ships carrying humanitarian aid for the Gaza Strip also unload their cargo at Ashdod.

<span class="mw-page-title-main">Seatrain Lines</span>

Seatrain Lines, officially the Over-Seas Shipping Company, was a shipping and transportation company conducting operations in the Americas and trans-Pacific regions. Seatrain Lines began intermodal freight transport in December 1928 by transporting entire loaded railroad freight cars between the United States and Cuba. The specially designed ship Seatrain, built in England, was followed in 1932 by two larger ships built in the United States and in 1939 by two additional ships. By the outbreak of World War II the company was operating five ships that became important in the war effort and basis for the design of fifty new ships for military use. A series of business setbacks amid the rise of containerized shipping left the company in perilous financial condition in the 1970s. Seatrain Lines shut down in 1981 after filing for bankruptcy.

<span class="mw-page-title-main">Heavy-lift ship</span> Vessel designed to move very large loads

A heavy-lift ship is a vessel designed to move very large loads that cannot be handled by normal ships. They are of two types:

<span class="mw-page-title-main">Breakbulk cargo</span> Shipping goods that are loaded individually

In shipping, break-bulk, breakbulk, or break bulk cargo, also called general cargo, is goods that are stowed on board ship in individually counted units. Traditionally, the large numbers of items are recorded on distinct bills of lading that list them by different commodities. This is in contrast to cargo stowed in modern intermodal containers as well as bulk cargo, which goes directly, unpackaged and in large quantities, into a ship's hold(s), measured by volume or weight.

A berth is a designated location in a port or harbour used for mooring vessels when they are not at sea. Berths provide a vertical front which allows safe and secure mooring that can then facilitate the unloading or loading of cargo or people from vessels.

<span class="mw-page-title-main">Lekki Port</span> Deep-sea port in Lagos State, Nigeria

Lekki Deep Sea Port, operational, but still partly under construction, is a multi-purpose, deep sea port in the Lagos Free Zone.

<span class="mw-page-title-main">Mundra Port</span> Container port in India

Mundra Port is India's first private port and largest container port, located on the northern shores of the Gulf of Kutch near Mundra, Kutch district, Gujarat. Formerly operated by Mundra Port and Special Economic Zone Limited (MPSEZ) owned by Adani Group, it was later expanded into Adani Ports & SEZ Limited (APSEZ) managing several ports. In FY 2020–21, Mundra Port handled 144.4 million tonnes of cargo.

A Terminal Operating System, or TOS, is a key part of a supply chain and primarily aims to control the movement and storage of various types of cargo in and around a port or marine terminal. The systems also enables better use of assets, labour and equipment, plan workload, and receive up-to-date information.

Container port design process is a set of correlated practices considered during container port design, aiming to transfer general business mission into detailed design documents for future construction and operation.

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.