PURPOSE BUILT CONTAINER SHIPS
|Feeder container ship.|
Container ship with own unloading gear.
Medium size purpose built container ship.
Large purpose built container ship.
The capacity of a container ship is measured in TEU. Container ships come in all sizes up to 8,000 TEU, with vessels in build of up to 9,200 TEU, and projected up to 12,000 TEU. Many vessels have a number of container slots that will accept refrigerated containers. The smaller ships engaged on coastal and short sea routes are known as feeders. Containers preloaded with goods for export can be locked and sealed before they are loaded onto the ship. With the use of shore based independent moving gantry cranes, the loading and unloading work is extremely fast. In line with the fast cargo handling work, container ships are usually built for speed, so that cargo can arrive at their destinations fast. The general arrangement of a pure container ship has changed over the years, with the first vessels being general cargo ships modified to carry containers, and usually had their own cargo gear in the form of derricks or cranes, but the holds were not specially designed with cell guides. Some of the medium sized modern vessels are geared, and call at ports that have no infrastructure for unloading containers.
Typical modern medium size feeder container ship of 900 TEU. Usually ungeared like this one, but sometimes fitted with cranes so they can load from ports with limited infrastructure.
|All the cargo holds contain guides for the containers so that it is easy to slide them in place. The containers are made so that the corners can be locked in place very easily. Because the containers are lowered in place precisely and the corners are matched for interlocking, it is important to keep the ship at even keel during the cargo work. For this purpose, container ships have remotely controlled ballast pumps and valves that can be controlled by deck officers.|