46 CFR 131.420 - Manning and supervision.
(b) Except as permitted by paragraph (c)(2) of this section, there must be enough deck officers, able seamen, or other certificated persons aboard each survival craft to manage the launching and handling of the survival craft.
(2) Considering the nature of the voyage, the number of persons permitted aboard, and the characteristics of the vessel, including gross tonnage, the cognizant OCMI may permit persons practiced in the handling of liferafts to be placed in charge of liferafts instead of persons required under paragraph (c)(1) of this section.
(3) A deck officer, able seaman, or other certificated person shall serve as second-in-command for each lifeboat either -
(i) Carried on a vessel in ocean service; or
(ii) Permitted to carry more than 40 persons.
(d) The person in charge and the second-in-command of each survival craft shall have a list of crew members and offshore workers assigned to the craft and shall see that the crew members are acquainted with their duties.