In all legal systems, the peculiar liabilities imposed on carriers extend only for the duration of the carriage, that is, from the time the goods are delivered to the carrier for shipment until the carrier has taken all reasonable steps to deliver them to the consignee. This means that the carrier is not under his liability as a carrier for the whole time during which the goods may be in his possession. Indeed, goods may be delivered to a carrier for safekeeping before the carriage begins or after it terminates in accordance with the terms of a special contract that may qualify as bailment in common-law jurisdictions and as a deposit in civil-law countries. Further, goods may be in the possession of the carrier because the consignee has unjustifiedly refused to take delivery, in which case the carrier may occupy the position of an involuntary bailee or depositary.

Generally, a carrier who is in possession of the goods before the beginning or after the end of the carriage is a warehouseman, and he is liable accordingly. In common-law jurisdictions the liability of a warehouseman is that of an ordinary bailee. In most cases a bailee, namely, a person entrusted with the goods of another, is not liable for the loss of or damage to the goods in his possession, unless the prejudice was caused by his intentional misconduct or negligence. In civil-law jurisdictions, if the parties agree that the carrier shall be in possession of the goods as a warehouseman before the beginning or after the end of the carriage, they form in effect a contract of deposit for reward, which is distinguishable from a contract of carriage. The elements of the contract of deposit and the rights and liabilities of the parties are dealt with in civil codes; exoneration clauses are valid under the conditions of the general law, and the period of limitation of actions is longer than one year. The depositary for reward is generally liable for intentional misconduct and negligence.

Measure of damages

Damages for the breach or nonperformance of a contract of carriage ordinarily are determined by application of the general rules of the law of contracts. Exceptional provisions applicable in case of breach of a contract of carriage are rare; they are mostly encountered in international conventions.

Bills of lading

Many shipments are made under bills of lading, issued by the carrier to the shipper upon delivery of the goods for shipment. The shipper is entitled to demand issuance of a bill of lading, unless his right is excluded by the contract of carriage. The bill of lading is, in the first place, an acknowledgment by a carrier that he has received the goods for shipment. Secondly, the bill of lading is either a contract of carriage or evidence of a contract of carriage. Thirdly, if the bill of lading is negotiable, as usually happens in carriage by sea, it controls possession of the goods and is one of the indispensable documents in financing the movement of commodities and merchandise throughout the world.

The bill of lading usually states the quantity, weight, measurements, and other pertinent information concerning the goods shipped. It frequently contains the statement that the goods have been shipped in apparent good order and condition. In this case, the carrier is not allowed to contradict the statement as to defects that were reasonably ascertainable at the time of delivery against an endorsee of the bill who relied on the statement. The bill of lading may be signed by the master or by a broker as agent of the carrier. As a receipt, the bill of lading is prima facie evidence that the goods have been delivered to the carrier; the burden of proof of nondelivery thus rests on the carrier.

In some jurisdictions the bill of lading is regarded as the contract of carriage itself. In other jurisdictions it is regarded merely as evidence of the contract of carriage; hence, oral testimony may be admissible to vary the terms of the contract evidenced by the bill of lading. When goods are shipped under a charter party or other document and a bill of lading is issued to cover the same goods, the bill of lading may ordinarily be regarded as a mere receipt. The terms of the contract are embodied in the charter party or other document, unless the parties intended to vary the terms of the agreement by the issuance of a bill of lading. A bill of lading that has been endorsed is ordinarily considered to contain the terms of the contract between the carrier and the endorsee.

At common law, a bill of lading functions as a semi-negotiable instrument. Delivery of the bill of lading to a transferee for valuable consideration transfers the ownership of the goods to the transferee, but the transferee cannot acquire a better title than that of the transferor. Under statutes, however, and under international conventions, bills of lading are in all legal systems fully negotiable instruments, unless they show on their face that they are not negotiable. When a bill of lading is negotiable, it confers a privileged status on the good faith purchaser, known as the holder in due course. A carrier who has issued a nonnegotiable bill of lading normally discharges his duty by delivering the goods to the named consignee; the consignee need not produce the bill or even be in possession of it. But a carrier who has issued a negotiable bill of lading will be discharged only by delivery to the holder of the bill, because, in a way, the goods are locked up in the bill of lading. The carrier who delivers goods without the bill of lading remains liable in common-law jurisdictions to anyone who has purchased the bill for value and in good faith, before or after the improper delivery. In civil-law jurisdictions, in case of an improper delivery, the carrier may remain liable to the endorsee of the bill of lading, even if the endorsee is himself not the legal owner of the bill but merely a finder or a thief.