What information primarily determines the shipment-specific details on an ocean or intermodal Bill of Lading (B/L)?

The shipment-specific details on an ocean or intermodal Bill of Lading (B/L) are primarily determined by the shipping line. The shipping line is responsible for the transportation of goods and manages the documentation associated with the shipment. This includes defining the terms of carriage, handling specific instructions from the shipper, and ensuring that the Bill of Lading accurately reflects the particulars such as types of goods being transported, weight, and destination.

The other options play roles in the broader logistics and shipping framework but do not directly create the shipment-specific details on the Bill of Lading. Customs regulations pertain to compliance and legal requirements but do not determine the specifics of a shipment. The shipper provides information, but it is the responsibility of the shipping line to compile that information into the formal document. International agreements guide practices and policies on global shipping but do not dictate the individual details captured in each Bill of Lading. Therefore, the shipping line is the correct source of shipment-specific details on an ocean or intermodal Bill of Lading.