156.8 MHz, Channel ________ is the international VHF-FM calling and distress frequency.

The frequency of 156.8 MHz is specifically designated as Channel 16 for VHF-FM communication and is recognized as the international calling and distress frequency. This channel is vital for maritime safety and communication because it is the primary channel used to coordinate distress signals and communications between vessels and shore stations.

Channel 16 is monitored by the Coast Guard and other search and rescue organizations to ensure rapid response in emergency situations. It serves as a common frequency for vessels to initiate communication with other vessels or to request assistance, emphasizing the importance of maintaining open communication during emergencies at sea. Other channels serve different purposes, such as ship-to-ship communications and bridge-to-bridge communications, but Channel 16 is distinct in its universal acknowledgment for distress and urgent calls.