The passports or sea letters, which shall prove the property of the neutral vessels, according to the tenor of the 8th Article of the present treaty, shall be prepared and distributed according to the model which shall be agreed on. Every time that the vessel shall have returned to its own country, it shall be furnished with new passports of the like kind; at least, these passports must not be of an older date than two years after the time the vessel has returned last to its own country. Moreover, the vessels being loaded, must be provided with such certificates, or manifests, or other public documents, as are commonly given to vessels which depart from the ports from whence they have last sailed, containing a specification of the cargo, of the place from whence the vessel has departed, and that of her destination, in order that it may be known whether there are any contraband effects on board of the vessels, and whether they are destined to carry them to an enemy's country, or not. If the names of the persons to whom the effects on board belong, are not expressed in the said documents, this omission shall not, however, give cause for confiscation, as the freedom of the vessel secures the freedom of the effects. ARTICLE XIX. Should it happen that the ships or vessels of one of the two contracting parties, or of their subjects, should strike against the rocks, or strand, or be shipwrecked on the coast of the other, the respective subjects shall enjoy both for their persons and their ships and vessels, effects and merchandise, all the aid and assistance possible, as the inhabitants of the country, and shall only pay the same expenses and duties, which the proper subjects of the State on whose coasts they shall have stranded or have been shipwrecked, are subject to in similar cases. ARTICLE XX. If the subjects or inhabitants of one of the two parties, compelled by storm, or by the pursuit of pirates, or of the enemy, or by any other accident, find themselves constrained to take refuge with their ships in the rivers, bays, ports, and roads belonging to the other, they shall be received and treated with every humanity and kindness, and they shall be permitted likewise to refresh and to furnish themselves at a just price with every kind of provisions, and everything necessary for the maintenance and support of their persons, and for the reparation of their ships, provided they carry on no commerce contrary to the laws and ordinances of the place or port into which they have entered. ARTICLE XXI.