46 USC 30703 - Bills of lading

(a) Issuance.— 
On demand of a shipper, the carrier shall issue a bill of lading or shipping document.
(b) Contents.— 
The bill of lading or shipping document shall include a statement of
(1) the marks necessary to identify the goods;
(2) the number of packages, or the quantity or weight, and whether it is carriers or shippers weight; and
(3) the apparent condition of the goods.
(c) Prima Facie Evidence of Receipt.— 
A bill of lading or shipping document issued under this section is prima facie evidence of receipt of the goods described.