(a) Tail shafts shall be drawn biannually or at the same time as the annual dry-docking if required by the board.
(b) Whenever any vessel is dry-docked, it shall be the duty of the master, owner, or agent to notify the board so that a thorough examination can be made. No repairs or alterations affecting the safety of the vessel either in regard to hull or machinery shall be made without the knowledge of the board.History: Bd. of Mar. Insp. Regs.. off 16 Oct 72, § 4.13.