This International Standard specifies basic technical requirements for the customs sealing Systems to be used on inland navigation vessels to seal off the load compartment(sL lt does not determine the design of customs sealing Systems; nor does it contain special data to be entered in the “Certificate for cargo transportation under customs sealing” or in other documents adopted by national customs authorities or appropriate international organizations. Examples of design and application of customs sealing Systems are given in figures 1 to 6.