It was established in 1958, with the preamble stating:
Having decided upon the adoption of certain proposals with regard to the reciprocal or international recognition of seafarers' national identity cards,...
An identity document issued under the convention or its successor is colloquially called a Seaman's Book[1] or a Seaman's Card.
As of January 2023, the convention had been ratified by 64 states. Eleven of the ratifying states have automatically denounced the convention by their subsequent acceptance of conventions that trigger denunciation.[2]