Table 2.

The Ship Berth Management Ontology.

Ship Berth Management	Multi-level regular plan management	First-level plan	Next concept list: Air Temperature, Humidity, Wind Power, Atmospheric Pressure, Geology, Water Quality, Silt Amount, etc.
		Second-level plan	Next concept list: Air Temperature, Humidity, Wind Power, Atmospheric Pressure, Geology, Water Quality, Silt Amount, etc.
		Three-level plan	Next concept list: Air Temperature, Humidity, Wind Power, Atmospheric Pressure, Geology, Water Quality, Silt Amount, etc.
		… …	… …
	Emergency plan management	Emergency situations I	… …
		Emergency situations II	… …
		… …	… …