Question 323Navigation General

The correct answer is D) Sound the request-for-opening signal and, after the bridge acknowledges it, sound the request-for-opening signal for the second bridge. This is the correct answer because the regulations require you to request the opening of each drawbridge individually, even if they are in close proximity. You should first sound the request-for-opening signal for the first bridge, wait for it to acknowledge your signal, and then sound the request-for-opening signal for the second bridge. This ensures clear communication with each bridge operator and allows them to properly coordinate the openings. The other options are incorrect because A) sounding the request-for-opening signal twice is not the proper procedure, B) sounding two prolonged blasts after the initial signal is not the correct sequence, and C) relying on the first bridge to notify the second is not the vessel operator's responsibility.