Which of the following is a designated AIS transmission frequency?

Which of the following is a designated AIS transmission frequency?

• A. VHF Channel 16
• B. VHF Channel 88B (162.025 MHz)
• C. VHF Channel 70
• D. VHF Channel 12

Answer: (B)

The designated AIS (Automatic Identification System) transmission frequency is VHF Channel 88B, which operates at 162.025 MHz. This frequency is specifically allocated for AIS communications, allowing vessels to automatically transmit and receive information such as position, course, and speed. Channel 88B is used because it provides sufficient bandwidth for the data transmission required for AIS functionality and helps facilitate real-time exchange of navigational information between vessels and shore stations. The choice of this frequency is critical for enhancing maritime safety and ensuring efficient navigation, particularly in congested waters. In contrast, other channels listed, such as VHF Channel 16 and Channel 70, are designated for different purposes. Channel 16 is primarily used for distress and safety communications, while Channel 70 is reserved for digital selective calling (DSC) purposes. Thus, understanding the specific use of each channel is vital for effective communication and navigation in maritime operations.

The designated AIS (Automatic Identification System) transmission frequency is VHF Channel 88B, which operates at 162.025 MHz. This frequency is specifically allocated for AIS communications, allowing vessels to automatically transmit and receive information such as position, course, and speed.

Channel 88B is used because it provides sufficient bandwidth for the data transmission required for AIS functionality and helps facilitate real-time exchange of navigational information between vessels and shore stations. The choice of this frequency is critical for enhancing maritime safety and ensuring efficient navigation, particularly in congested waters.

In contrast, other channels listed, such as VHF Channel 16 and Channel 70, are designated for different purposes. Channel 16 is primarily used for distress and safety communications, while Channel 70 is reserved for digital selective calling (DSC) purposes. Thus, understanding the specific use of each channel is vital for effective communication and navigation in maritime operations.