Which aspect of navigation does ECDIS NOT cover?

ECDIS, or Electronic Chart Display and Information System, is primarily designed for the navigation and display of navigational data. Its main functions include route planning, real-time monitoring of vessel position, and the display of various navigational information critical for safe maritime navigation.

The aspect that ECDIS does not cover is weather forecasts. While it can display some navigational data that pertains to safe navigation, such as chart information, vessel position, and intended route, it does not provide comprehensive weather forecasting. Weather conditions are essential for navigation, but they are typically managed by separate systems or services that specialize in meteorological data, rather than being integrated into the ECDIS itself.

This distinction helps users understand that while ECDIS is a powerful tool for navigation, it has limitations, particularly when it comes to integrating dynamic environmental factors like weather conditions.