To the end, that all manner of dissension and quarrels may be prevented and avoided on both sides, it is agreed, that in case either of the parties hereto should be engaged in war, the ships and vessels belonging to the subjects or citizens of the other ally must be furnished with sea letters, or passports, expressing the name, property, or bulk of the ship, or vessel, as also the name, place, or habitation of the master, or commander of the said ship, or vessel, that it may appear thereby, that the ship really and truly belongs to the subjects, or citizens of one of the parties, which passport shall be made out and granted according to the form annexed to this treaty. They shall likewise be recalled every year, that is if the ship or vessel happens to return home within the space of a year. It is likewise agreed, that such ships or vessels being laden are to be provided not only with passports, as above mentioned, but also with certificates containing the several particulars of the cargo, the place from whence the ship sailed, and whither she is bound, that so it may be known, whether any forbidden or contraband goods be on board the same; which certificates shall be made out by the officers of the place whence the ship or vessel set sail, in the accustomed form; and if any one shall think it fit or advisable to express in the said certificates the persons to whom the goods on board belong, he may freely do it. ARTICLE XXXI. The ships or vessels of the subjects or citizens of either of the parties coming upon any coasts belonging to either of the said confederates, but not willing to enter into port, or being entered into port, and not willing to unload their cargoes or break bulk, shall not be obliged to give an account of their lading, unless they should be suspected on some manifest tokens of carrying to the enemy of the other ally any prohibited goods called contraband, and in case of such manifest suspicion, the said subjects and citizens of either of the parties shall be obliged to exhibit in the ports, their passports and certificates in the manner before specified. ARTICLE XXXII.