Question 711Navigation General

The correct answer is D) All of the above. ECDIS (Electronic Chart Display and Information System) is designed to provide alarms for various situations to alert the watch officer and ensure safe navigation. The ECDIS must give an alarm for the following cases: A) If the ship, within a specified time set by the watch officer, is going to cross the boundary of a prohibited area. B) If the ship, within a specified time set by the watch officer, is going to cross a safety contour. C) When the specified limit for deviation from the planned route is exceeded. All of these scenarios are critical for safe navigation, and the ECDIS must provide the appropriate alarms to allow the watch officer to take necessary action to avoid hazardous situations.