Marine AIS Explained: A Guide for Boaters

As a boater, it is essential to stay safe and avoid any accidents or collisions on the water. One important tool that can aid in this endeavor is the Automatic Identification System (AIS).

What is AIS?

AIS is a tracking system that allows boats to broadcast their positions, course, and speed to other vessels as well as receive that information from other boats. The system uses a VHF radio frequency to send and receive data and works similarly to how air traffic control tracks planes.

How Does AIS Work?

Boats that are equipped with AIS will broadcast their information on two different VHF channels: AIS channel 1 (161.975 MHz) and AIS channel 2 (162.025 MHz). The information transmitted includes the boat's MMSI number, position, course, speed, and other details like the boat's name and call sign.

Why is AIS Important?

AIS is a vital component of boating safety as it allows boats to be aware of their surroundings and avoid collisions. It is particularly useful in situations where visibility is low or when there is heavy traffic on the water.

Moreover, AIS makes it easier for search and rescue teams to locate boats in distress, making it a valuable tool in emergency situations.

Types of AIS

There are two types of AIS: Class A and Class B.

Class A is required for commercial vessels, and it has more advanced capabilities and features than Class B. It also operates on both AIS channels, increasing its transmission range and making it easier to locate in search and rescue situations.

Class B is designed for smaller recreational boats and has a shorter transmission range, only operating on AIS channel 1. It is less expensive and less complicated than Class A, making it a popular choice for many boaters.

Conclusion

AIS is a critical tool in ensuring boater safety and avoiding collisions on the water. With its ability to track boats and maintain situational awareness, AIS is a must-have for any responsible boater. Whether you choose Class A or Class B, make sure to invest in AIS and put safety first on your boating adventures.