...light or harbour dues, of pilotage, of salvage in case either of damage or shipwreck, or on account of any other local charges, shall be imposed in any of the ports of the Republic of Costarica on British vessels, than those payable in the same ports by Costarican vessels...

...construed to extend, to any duties or charges on account of tonnage,, light OK OT harbour dues, pilotage, salvage in case of damage' or shipwreck, or any other local charges to which any vessels of the United Provinces of Rio de la Plata, of the burthen of one hundred and...