Question 377Navigation General

The correct answer is B) Approach under full control to pass through the bridge. The regulations state that one prolonged blast followed by one short blast from the bridge is the signal indicating that the bridge is ready to be passed. This signals that the bridge is open and ready for the vessel to proceed through. Therefore, the appropriate action is to approach the bridge under full control to pass through, as the bridge is ready for the vessel to transit. The other options are incorrect because: A) The bridge is not out of service, it is simply indicating it is ready to be passed. C) The regulations do not specify a 15-minute wait time, the bridge is ready to be passed. D) There is no need to hold at 400 yards, as the bridge is signaling it is ready for the vessel to proceed.