Art. 18. If any Swedish ships of war or merchant vessels shall have the misfortune to be wrecked, or cast away by stress of weather, or any other accident, on the coasts and harbours of Russia, his czarish majesty's subjects shall be obliged to give them all aid and assistance in their power to save their rigging and effects, and faithfully to restore whatever may be drove on shore, if demanded, provided they are properly rewarded. And the subjects of his majesty the king of Sweden shall do the same in regard to such Russian ships and effects as may have the misfortune to be wrecked or otherwise lost on the coasts of Sweden; for which purpose, and to prevent all ill treatment, robbing, and plundering, which commonly happens on such melancholy occasions, his czarish majesty and the king of Sweden will cause a most rigorous prohibition to be issued, and all who shall be found transgressing in this point shall be punished on the spot. Art. 19. And to prevent all possible cause or occasion of misunderstanding between the two parties, in relation to sea affairs, they have concluded and determined, that any Swedish ships of war, of whatever number or size, that shall hereafter pass by any of his czarish majesty's forts or castles, shall salute the same with their cannon, which compliment shall be directly returned in the same manner by the Russian fort or castle; and, _vice versa_, any Russian ships of war, of whatever number or size, that shall hereafter pass by any fort or castle belonging to his Swedish majesty, shall salute the same with a discharge of their cannon, which compliment shall be instantly returned in the same manner by the Swedish fort; and in case any one or more Swedish and Russian ships shall meet at sea, or in any harbour or elsewhere, they shall salute each other with a common discharge, as is usually practised on such occasions between the ships of Sweden and Denmark. Art. 20. It is mutually agreed between the two powers, no longer to defray the expenses of the ministers of the two powers, as have been done hitherto; but their representative ministers, plenipotentiaries, and envoys, shall hereafter defray their own expenses and those of their own attendants, as well on their journey as during their stay, and back to their respective place of residence. On the other hand, either of the two parties, on receiving timely notice of the arrival of an envoy, shall order that their subjects give them all the assistance that may be necessary to escort them safe on their journey. Art. 21. His majesty the king of Sweden does on his part comprehend his majesty the king of Great Britain in this treaty of peace, reserving only the differences subsisting between their czarish and his Britannic majesties, which they shall immediately endeavour to terminate in a friendly manner; and such other powers, who shall be named by the two reconciled parties within the space of three months, shall likewise be included in this treaty of peace.