The Standard Carrier Alpha Code for the Nippon Yusen Kaisha Line is NYKS. These codes are two, three or four letters long, refer to specific transportation companies, and are issued by the National Motor Freight Traffic Association.
The Standard Carrier Alpha Code system was developed during the 1960s when record keeping in the transportation industry began to be computerized in the United States. These codes are used on all documents referring to a specific shipment as well as on the containers used in that shipment. Nippon Yusen Kaisha is one of the largest shipping companies in the world and is headquartered in Chiyoda, Tokyo, Japan.