207. If your vessel must pass through a draw bridge during a scheduled closure period, what signal should you sound to request the opening of the draw?

To request a drawbridge opening during a scheduled closure, sound five short blasts, the internationally recognized danger/doubt signal. This signal indicates an urgent need for action, overriding the scheduled closure to ensure vessel safety, as mandated by Navigation Rule 34(d) and 33 CFR Part 117. Other signals have different meanings or are not prescribed for bridge openings.