SATELLITE-DERIVED POSITIONS
Positions obtained from satellite navigation systems, such as the GPS, are normally referred to WGS84 Datum.  Such positions can be plotted directly on this chart.

NAVIGATIONAL AIDS
The navigational aids in this area have been compiled from Saudi Coast Guard information. Hence mariners are advised to refer latest publications and consult local agencies for guidance.

CORAL REEFS
Area of living reef with a pronounced micromorphology mainly made up by the colonies of coral exists till 200 metres of depth. Hence mariners are advised to contact local agencies for designated areas and are advised to navigate with caution.