Placing of Seamen Convention, 1920

Placing of Seamen Convention, 1920 is an International Labour Organization Convention.
It was established in 1920:
Having decided upon the adoption of certain proposals with regard to the "supervision of articles of agreement; provision of facilities for finding employment for seamen; application to seamen of the Convention and Recommendations adopted at Washington in November last in regard to unemployment and unemployment insurance", ...
Ratifications.
As of 2013, the convention had been ratified by 41 states. Of the ratifying states, 15 have subsequently denounced the convention, some by a process that automatically denounces the treaty when the same state ratifies a convention that supersedes the 1920 treaty.