What is the geodetic datum used for positions transmitted by AIS?

What is the geodetic datum used for positions transmitted by AIS?

• A. WGS 84
• B. NAD 83
• C. ED 50
• D. AGD 66

Answer: (A)

The geodetic datum used for positions transmitted by Automatic Identification System (AIS) is WGS 84. This standard was developed by the World Geodetic System for global navigation and positioning, making it suitable for maritime navigation. WGS 84 is a consistent reference system that provides an accurate framework for latitude and longitude across the globe, ensuring that vessels can be located precisely, regardless of their position at sea. Using WGS 84 in AIS communications allows for seamless integration with various navigation and charting systems. It is widely adopted internationally and ensures that all vessels and maritime authorities are operating with a common reference, reducing the risks of navigational errors that could arise from using different datums. The other datums, while used in certain regions or applications, are not the standard for AIS. NAD 83 is primarily used in North America, ED 50 is common in parts of Europe, and AGD 66 was historically used in Australia but has been largely replaced by GDA94 and GDA2020, which are both based on the WGS 84 framework. This global acceptance and accuracy make WGS 84 the correct choice for AIS positioning data.

The geodetic datum used for positions transmitted by Automatic Identification System (AIS) is WGS 84. This standard was developed by the World Geodetic System for global navigation and positioning, making it suitable for maritime navigation. WGS 84 is a consistent reference system that provides an accurate framework for latitude and longitude across the globe, ensuring that vessels can be located precisely, regardless of their position at sea.

Using WGS 84 in AIS communications allows for seamless integration with various navigation and charting systems. It is widely adopted internationally and ensures that all vessels and maritime authorities are operating with a common reference, reducing the risks of navigational errors that could arise from using different datums.

The other datums, while used in certain regions or applications, are not the standard for AIS. NAD 83 is primarily used in North America, ED 50 is common in parts of Europe, and AGD 66 was historically used in Australia but has been largely replaced by GDA94 and GDA2020, which are both based on the WGS 84 framework. This global acceptance and accuracy make WGS 84 the correct choice for AIS positioning data.