Replacing safety lines

[Renoir]

Would someone advise my regarding "international" cruising requirements which would all my boat to pass an inspection for offshore cruising boats? For example, as I understand, vinyl jacketing would not pass due to the resulting inability to be able to inspect the strands of wire for breakage. In addition, I suppose that HM line would not pass as well.....what else?

Would there be an advantage to use Dyform wire for smoothness on the hands? I don't know that the stiffness of the safety line would matter that much due to the fact that there is such a gradual curve along the length of the "lead" along the sides of the boat....comments?
Thanks!