§ 10503.
Before signing the agreement required by section 10502 of this title, a seaman required by section 8701 of this title to have a merchant mariner’s document shall exhibit to the master a document issued to the seaman and appropriately endorsed for the capacity in which the seaman is to serve.
([Pub. L. 98–89], Aug. 26, 1983, [97 Stat. 570].)