Inspections of ships
A ship’s flag State is the country in which a ship is registered. The
ship flies the country’s national flag at its stern. The Port State is
the country which the ship is visiting.
The flag State makes safety and environmental laws and regulations with which
their registered ships must comply. To make sure this happens flag
States inspect their ships, usually at the ship’s home port. However,
they can do inspections in any port in the world on their own flag
ships. This is called Flag State Control.
Port State Control is the inspection of all foreign ships, visiting a
port. These inspections are done by government employed surveyors and
inspectors.