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Plotting of Ship positions, using Global Positioning System in Indian Navigation Chart on Everest datum Navigational Charts in everest datum
Key Changes and Requirements
1. Plotting GPS Positions
Many mariners are incorrectly plotting GPS positions on WGS 84 datum on Indian Navigational Charts in Everest datum without applying datum shift parameters/corrections.
- Action: Apply datum shift parameters/corrections before using GPS positions on Indian Navigational Charts.
- Reference: Datum shift parameters are specified on the charts under the legend note.
2. Usage Warning
The Directorate General of Shipping and the Chief Hydrographer to the Govt. of India will not be responsible for marine accidents resulting from the usage of GPS positions in WGS 84 datum plotted on Indian Navigational Charts without applying official datum transformation parameters/correction.
Use alternate methods of fixing while operating in restricted waters and in the vicinity of dangers, especially where datum shift parameters/corrections are not listed.
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