Cargo retention clause. When liquid cargoes are discharged from tankers differences can occur between the quantities stated in bills of lading to have been loaded and the quantities measured on discharge.

Containerisation system. Containers are not new. From earliest times human beings have used objects designed to hold other things. Even nature did this before man thought of it. The egg is an obvious example. The use of containers in shipping is also not new. Jars for oil and wine were used thousands of years ago.

Container flow management (CFM). This expression is related to container logistics. This approach to logistics involved the management of the fleet of containers themselves, not the fleet of container vessels and the spaces (or “slots”) on board the vessels. The management also involves the movement of a container from one point to another without consideration of the actual mode of transport. The traditional carrier thus becomes a true “transport organiser”.


Container sizes. The sizes of containers depend mainly on their external dimensions, so that, for example, a container can be an ISO standard “Series 1 Freight container, Rating 1AA” with external dimensions of 40 feet (length) x 8 feet (width) x 8 feet 6 inches (height). The dimensions are used in either imperial or metric units. Although much of the world has become metricated, the “box” or container is still referred to by its imperial units, for example, a FEU is a forty-foot equivalent unit (of space occupied).

Containers and bills of lading. With the advent of containerisation and also intermodalism, much cargo is being carried in containers, especially smaller consignments which can be carried on a "door-to-door" service.

Colliery. A "colliery" is a coal mine and in voyage charters for the carriage of coal the laytime agreed may depend on the working hours of the mine, if the coal cargo has to be delivered to the vessel. The word is connected to expressions that affect laytime.


Container slot management (CSM). The objective of this management in a liner operator’s corporate plane is to achieve the best utilisation factors of the container spaces or slots available on-board the carrier’s own vessels. The revenue is increased by the volume of the goods carried. If slot space cannot be found in the carrier’s vessels, the carrier may use “vessel sharing arrangements” (VSA) with other carriers under which slots on-board vessels are reserved for fellow carriers.


CENTROCON. This charterparty approved by the Chamber of Shipping of the United Kingdom is in general use for shipments of grain from the River Plate to all parts of the world. It was published in 1914.

Classification surveys. Classification societies carry out various surveys on behalf of governments, particularly in order to ensure that the vessel complies with relevant standards that are required to be met for the issue of essential certificates, such as the Cargo Ship Safety Construction Certificate (SAFCON).

Closed conference. This type of liner conference restricts membership in order to protect the members’ market share. It is the most common type of conference.

Colliery guarantee. This is an undertaking in a contract between the colliery owners and the charterer or shipowner. The colliery agrees to supply the cargo and load the vessel on usual colliery terms. If a reference to "colliery guarantee" is incorporated in a coal charterparty the charterer is relieved from any liability for delay to the vessel if the colliery does not supply the coal within the agreed laytime.