11. The tower is marked on navigational charts , but does not currently serve as an aid to navigation. 12. Locations of demolished lights have been estimated using National Oceanic and Atmospheric Administration ( NOAA ) navigational charts . 13. Unfortunately, the navigational charts and sailing directions do not completely agree with each other as to the boundary. 14. The department is also responsible for making electronic navigational charts officially on behalf of the government of India. 15. ENCs are available for wholesale distribution to chart agents and resellers from Regional Electronic Navigational Chart Centres ( RENCs ). 16. In between the two world war, she developed the technique of fishing maps apart from the already used navigational charts . 17. As well as updating navigational charts , RAN survey ships were also used to inspect and clear sites for amphibious landings. 18. ATC will assign altitudes in its initial clearance or amendments thereto, and navigational charts indicate minimum safe altitudes for airways. 19. This allowed the two delays to be read simultaneously against the scale, and then looked up on the navigational chart . 20. Every producer of navigational charts also provides a system to inform mariners and aviators of changes that affect the chart.
