Contact cleaner, also known as switch cleaner, is a term for a chemical, or a mixture of chemicals, intended to remove or prevent the build-up of oxides or other unwanted substances on the conductive surfaces of connectors, switches and other electronic components with moving surface contacts, and thus reduce the contact resistance encountered.

The damage occured when a ship comes into contact with other ships and/or a permanent structure such as quayside. Contact damage usually happens during manoeuvring procedures in harbours.

Contact electrification was an erroneous scientific theory from the Enlightenment that attempted to account for all the sources of electric charge known at the time.

Contact protection methods are designed to mitigate the wear and degradation occurring during the normal use of contacts within an electromechanical switch, relay or contactor and thus avoid an excessive increase in contact resistance or switch failure.

The term contact resistance refers to the contribution to the total resistance of a system which can be attributed to the contacting interfaces of electrical leads and connections as opposed to the intrinsic resistance.

A contactor is an electrically-controlled switch used for switching an electrical power circuit.

A large steel box designed to allow goods to be sent from door to door without any handling from the initial packing to final discharge.

A number of container stacks interconnected and secured horizontally by bridge stackers.

Containers are commonly stowed below deck and sometimes on deck within fixed vertical cell guides, which guide them into place and ensure that they do not move during the voyage.

Fixed and loose fittings used for the reliable securing of containers. - Fixed fittings – Stacking cones, foundations, deck foundations, lashing plates, lashing eyes, lashing pots, d-rings.

A load sufficient in size to fill a container space either by cubic measurement or by weight.

A stowage and lashing plan approved by the classification society. It describes the application of the loose lashing equipment and the corresponding weight distributions for all container stacks.

Ships intended exclusively for the carriage of containers and equipped with the appropriate facilities. Such vessels have cellular holds with cell guides attached to bulkheads and container foundations.

Containers which are stacked vertically and secured horizontally by stackers, lashing etc.

Hatch covers for Panamax ships have stack weights up to 90 tonnes/20ft units and 120 tonnes/40ft units. Post-Panamax vessel could have 100 tonnes/20ft and 140 tonnes/40ft units.

The standard 40ft containers (FEU) are stowed in cell guides without any lashing devices. If there is also a certain number of 20ft units (TEU) available at all time, the creation of a hold with 20ft guides may be considered.

Ship motions impose heavy loads on the deck cargo which would soon move unless secured in place. Containers carried on deck may be secured by twistlock alone.

An area designated for the stowage of containers; usually accessible by truck, railroad and marine transportation. Containers are picked up, dropped off, maintained and housed there.

Stowage of general or special cargoes in a container for transport in the various modes.

A containment building, in its most common usage, is a reinforced steel, concrete or lead structure enclosing a nuclear reactor.