Question 401Navigation General70% to pass
If your vessel must pass through a draw during a scheduled closure period, what signal should you sound to request the opening of the draw?
AI Explanation
The correct answer is B) Five short blasts.
According to the USCG Navigation Rules, International-Inland, Rule 35(d), when a vessel approaches a drawbridge that is closed, the vessel must sound five short and rapid blasts of the whistle or horn to request the opening of the draw. This signal alerts the bridge operator that a vessel is waiting to pass through the draw.
The other options are incorrect because they do not match the regulatory requirement for the proper sound signal to request the opening of a closed drawbridge. Three short blasts (A), one prolonged blast followed by three short blasts (C), and one prolonged blast followed by one short blast (D) are not the appropriate signals specified in the Navigation Rules for this situation.
Related Questions
#399 When approaching a lock entrance, the visual signal displayed when a single lock is ready for entrance is a flashing _______________.#400 A flashing green light displayed at a single lock means that the lock is _______________.#402 You are approaching an open drawbridge and sound the proper signal. You receive no acknowledgment from the bridge. Which action should you take? #403 A drawbridge may use visual signals to acknowledge a vessel's request to open the draw. Which signal indicates that the draw will NOT be opened immediately? #404 If a towboat requires a double lockage it shall give which sound signal at a distance of not more than one mile from the lock?