1. A.666(16), World Wide Radionavigation System,1989
2. MSC.112(73), Adoption of the Revised Performance Standards for Shipborne Global Positioning System (GPS) Receiver Equipment,2000
3. MSC.113(73), Adoption of the Revised Performance Standards for Shipborne GLONASS Receiver Equipment,2000
4. MSC.114(73), Adoption of the Revised Performance Standards for Shipborne DGPS and DGLONASS Maritime Radio Beacon Receiver Equipment,2000
5. MSC.115(73), Adoption of the Revised Performance Standards for Shipborne Combined GPS/GLONASS Receiver Equipment,2000