1. EUSPA (2021), Report on Maritime and Inland Waterways User Needs and Requirements – outcome of the EUSPA user consultation platform, GSA-MKD-MAR-UREQ-229399, Issue/Revision: 3.0.
2. IMO (1991), A.694(17), General Requirements for Shipborne Radio Equipment Forming Part of the GMDSS and for Electronic Navigation Aids. International Maritime Organization: London, UK, 1991.
3. IMO (2000). MSC.112(73), Adoption of the Revised Performance Standards for Shipborne Global Positioning System (GPS) Receiver Equipment; International Maritime Organization: London, UK, 2000.
4. IMO (2000a). MSC.113(73), Adoption of the Revised Performance Standards for Shipborne GLONASS Receiver Equipment; International Maritime Organization: London, UK, 2000.
5. IMO (2000b). MSC.114(73), Adoption of the Revised Performance Standards for Shipborne DGPS and DGLONASS Maritime Radio Beacon Receiver Equipment; International Maritime Organization: London, UK, 2000.