Section 4.07-5 - Investigating officers, powers of(a) An investigating officer investigates each marine casualty or accident reported under §§ 4.05-1 and 4.05-10 .(b) Such investigating officer shall have the power to administer oaths, subpoena witnesses, require persons having knowledge of the subject matter of the investigation to answer questionnaires and require the production of relevant books, papers, documents and other records.(c) Attendance of witnesses or the production of books, papers, documents or any other evidence shall be compelled by a similar process as in the United States District Court.CGFR 65-50, 30 FR 17099, Dec. 30, 1965, as amended by CGD 72-104R, 37 FR 14234, July 18, 1972