To qualify for an endorsement as able seaman authorized by this section, an applicant must provide satisfactory proof that the applicant—
(1) is at least 18 years of age;
(2) has the service required by the applicable section of this part;
(3) is qualified professionally as demonstrated by an applicable examination or educational requirements; and
(4) is qualified as to sight, hearing, and physical condition to perform the seaman’s duties.
The classifications authorized for endorsement as able seaman are the following:
(1) able seaman—unlimited.
(2) able seaman—limited.
(3) able seaman—special.
(4) able seaman—offshore supply vessels.
(5) able seaman—sail.
(6) able seaman—fishing industry.
(Pub. L. 98–89, Aug. 26, 1983, 97 Stat. 542; Pub. L. 98–364, title IV, § 402(9)(C), July 17, 1984, 98 Stat. 448.)