How should a ship respond if a Distress alert is received on the 12 MHz DSC frequency?

When a ship receives a distress alert on the 12 MHz DSC frequency, it is critical to follow the proper protocols for responding to such an emergency. The correct response involves switching the transceiver to the frequency of 12290.0 kHz in simplex mode using J3E (which stands for SSB amplitude modulation). This frequency is recognized as a dedicated frequency for maritime distress and calling, specifically for communication related to a distress situation.

By setting the transceiver to 12290.0 kHz, the vessel positions itself to communicate effectively with the distressed vessel or with any nearby vessels that may be providing assistance. This action ensures that the ship can relay information, coordinate rescue efforts, or assist in any way possible.

The other choices reflect incorrect actions. For instance, using DSC to acknowledge the alert using the same frequency is not the ideal step since it does not facilitate direct voice communication or further assistance. The idea of doing nothing because the ship might be "too far away" contradicts the responsibilities of vessels to respond to distress alerts, regardless of perceived distance. Lastly, setting the transceiver to 12520.0 kHz simplex F1B/J2B does not designate a specific frequency for distress and calling communication, thereby missing