Definition: Supporting and auxiliary services
Balance of Payments, IMF
This category covers a range of services provided in ports, airports, and other terminal facilities. Among such services are: cargo handling (loading and unloading of containers); storage and warehousing; packing and repacking; other towing, pilotage, and navigation aid for carriers; maintenance and cleaning of transportation equipment; and salvatage operations.
International Monetary Fund (IMF), "Balance of Payments Manual" (BOP), Fifth Edition, Washington D.C., 1993