In an investigation conducted under this chapter, the following shall be allowed to be represented by counsel, to cross-examine witnesses, and to call witnesses:
(1) an owner,
(2) any holder of a license or certificate of registry,
(3) any holder of a merchant mariner’s document,
(4) any other person whose conduct is under investigation, and
(5) any other party in interest.
(Pub. L. 98–89, Aug. 26, 1983, 97 Stat. 537.)