Where a vessel is so hired that the charterer has the exclusive possession, control and management, appointing the master and hiring the crew, there is said to be a demise of the ship and a temporary ownership in the charterer. He then becomes responsible for her obligations as if he were the real owner and has similar rights of limitation. The law provides that where a charterer mans, victuals and navigates the ship at his own expense, he shall be considered as owner within the provisions of the statutes limiting liability, and that the ship shall be liable, when so chartered, as if navigated by the owner (Rev. St. § 4286).

4. Liabilities of Mortgagee.—

These depend upon his possession of the ship. Where he takes possession and operates the ship for his own benefit, he assumes all the responsibilities of ownership but without the right to limit his liability to the value of his interest in the ship. Thus he may become personally liable for wages, supplies and repairs as well as for damages done by negligence. He may, by special arrangements, confine contract liabilities to the ship and, being lawfully in possession, he may create maritime liens upon her. A mortgagee out of possession is not considered as the owner even when he holds the record title under a bill of sale absolute on its face. He may still show that his title was by way of security only and so exempt himself from personal liability for repairs done or supplies furnished for the contracts or negligence of the mortgagor or other person having real ownership of the boat.

5. Liabilities of Underwriters.—

The insurers are ordinarily strangers to the ship as far as concerns any authority to instruct the master or incur obligations on her account. Only in case of an abandonment of the vessel to them, when the loss is total or constructively total, and when they have accepted such an abandonment, does such authority arise. An abandonment when properly made, or accepted, vests the property in the underwriter and the master then becomes his agent. The underwriter is then the real owner and has all an owner's liabilities and limitations. There is, however, a very large intermediate class of disasters where the underwriters decline an abandonment and yet take possession of the ship and cargo for the purpose of rescue and repair. Large expenses are thus created for which the damaged ship and cargo may be adequate security. The underwriters are personally liable, in the absence of special contract, for the contracts of their agents, although the nature of the business is such that it is often a practical difficulty to ascertain who were the insurers actually making the engagements and what was the real authority of those assuming to represent them. These questions are usually not raised during the exigencies of salvage operations but may become important when the work is unsuccessful and the expenses are unpaid.

6. Theories of Limitation.—

The general maritime law has always been that an owner was not personally liable for the obligations of his ship as distinguished from his own agreements or delinquencies. It regards the ship as a distinct individuality similar to a corporation. The common law, on the contrary, considers the ship like any other kind of personal property and holds the owner correspondingly liable because his agents were in charge and he is liable for whatsoever they do within the scope of their agency. The maritime law retains an earlier notion of the common law, that it is against all reason to put blame or fault upon a man for the negligence of others and declines to hold him personally for what he cannot personally control. It also recognizes the fact that men of means will not invest in ships unless they can be protected against the unlimited liability of the common law. It holds that such a liability is inherently unjust when applied to the shipowner and it also accepts the situation in which the capitalist declines to invest in shipping unless that injustice is averted. Hence came the rule that the owner is not liable on account of the ship beyond the value of his interest therein and her freight pending and the corollary that he might absolve himself from all liability by abandoning the ship to her creditors. The theory is (at least as applied to torts) that:

If you surrender the offending vessel you are free, just as it was said by a judge in the time of Edward III, "If my dog kills your sheep and I freshly after the fact tender you the dog you are without recourse to me."[18]

This rule is in abrupt conflict with the theories of the common law and, while it has been expressed in statutory form in most maritime countries, the courts have been so far influenced by common law doctrines in its application that it does not prevail in its original integrity either in this country or in England. Congress has endeavored to restore it in the United States but the courts, so far, have declined to follow the plain language of the statute.

7. Contract Limitations.—