U

An International Association of Classification Societies Unified Requirement addressing the cyber resilience of ships, setting minimum requirements for the design, construction, and testing of onboard systems and networks so that vessels can withstand and recover from cyber incidents. IMO-grounded

See Uniform Customs and Practice for Documentary Credits.

See Union Internationale des Chemins de Fer.

See Ultra Large Crude Carrier.

See Unit Load Device.

The empty space between the surface of a liquid in a tank and the top of the tank, or the reference point at the tank top. Ullage measurement is used to gauge the quantity of cargo, fuel, or ballast in a tank and to allow for thermal expansion.

A vessel designed for the carriage of liquid cargo in bulk with a loading capacity from 250.000 till 500.000 DWT.

A notation and operating arrangement in which the machinery space is designed and equipped with automation, alarms, and monitoring so that it may be operated safely without a continuous watch in the engine room. Class rules set the requirements for such unattended operation. IMO-grounded

See United Nations Conference on Trade And Development.

The vertical distance between the lowest point of a ship's keel and the seabed at any moment. Maintaining an adequate under-keel clearance, allowing for squat, tide, and wave action, is essential to avoid grounding in shallow water.

A supporting frame or structure of a wheeled vehicle. The landing gear of an aircraft.

A carrier in a conference or consortium who carries less cargo than the allotment distributed to him.

See United Nations Economic Commission for Europe.

The in 1993 revized rules of the International Chamber of Commerce (ICC)

International railway union, in which most of the European national railway

A number of individual packages bonded, palletized or strapped together to form a single unit for more efficient handling by mechanical equipment.

Any type of container or pallet, in which a consignment can be transported by air whether or not such a container is considered aircraft equipment. Any type of air freight container, aircraft container, aircraft pallet with a net, or aircraft pallet with a net over an igloo.

A United Nations agency whose work in shipping includes the liner code

The UN/ECE is one of a number of Economic and Social Commissions established

A standard (ISO6422) which lays down the basic principles for the design of the image area on documents for use in international trade. Synonym: Layout Key.

A collection of structured data that is exchanged to convey information related to a specific transaction between partners engaged in electronic data inter- change. Messages are composed of logically grouped segments required for the type of message transaction covered. Note: A set of segments in the order specified in a message directory starting with the message header and ending with the message trailer (ISO9735).

See United Nations Dangerous Goods Number.

The highest concentration of a flammable vapour in air that will still support combustion; above it the mixture is too rich to ignite. With the lower flammable limit it defines the flammable range that is central to tanker gas control.

An International Association of Classification Societies Unified Requirement addressing the cyber resilience of onboard systems and equipment, specifying requirements for the individual computer-based systems and components integrated into a ship. IMO-grounded

Unless Sooner Commenced

A public network made up of thousands of newsgroups and organized by topic.

The quotient of used capacity and available capacity.

Unless Used In Which Case Time Actually Used To Count