A more thorough explanation:

Definition: To stop at a port, usually for a brief period, in marine insurance.

Example: The ship touched at the port of Singapore to refuel before continuing its journey to Australia.

Explanation: In this example, the ship made a brief stop at the port of Singapore to refuel before continuing its journey to Australia. This is an example of the term "touch" in marine insurance, which refers to a ship stopping at a port for a short period of time.