Question 784Navigation General

The correct answer is D) All of the above. The data layer categories to be displayed on ECDIS (Electronic Chart Display and Information System) include notice to mariners information, ECDIS warnings and messages, and hydrographic office data. These are all essential components of the ECDIS display, as they provide critical information to the navigator for safe navigation. The other options are incorrect because they do not encompass the full scope of the data layers required to be displayed on ECDIS. Notice to Mariners information, ECDIS warnings and messages, and hydrographic office data are all necessary for the ECDIS to function effectively and provide the mariner with a comprehensive view of the navigational environment.