Which of the following is a requirement if your bridge-to-bridge radiotelephone ceases to operate?

Correct Answer: Option B — exercise due diligence to restore the system at the earliest practicable time

33 CFR 26.07 requires that upon radiotelephone failure, the master must exercise due diligence to restore the system at the earliest practicable time. There is no immediate requirement to anchor or moor, provided the master accounts for the lack of communication in the vessel's safe navigation.