Which of the following is True if your radiotelephone fails while underway?

Correct Answer: Option B — the loss of the radiotelephone must be considered in navigating the vessel

33 CFR 26.07 dictates that if a radiotelephone fails while underway, the master is not required to anchor immediately. Instead, the master must consider the loss of communication capability as a factor in the vessel's navigation, adjusting speed and caution accordingly until the equipment is restored.