Translate the following English sentence to French:
"Finally, the fact that many States tolerate over a hundred flags of convenience, offering guarantees that are more than dubious, is a serious threat to the safety, the working conditions and even the lives of many sailors."
Enfin, l'acceptation, par de nombreux États, de plus d'une centaine de pavillons de complaisance aux garanties plus que douteuses, met gravement en danger la sécurité, les conditions de travail, voire la vie de nombreux marins.