Final answer:
ECDIS automatically calculates the ship's position and its predicted course for a watchstander. The position is updated via GPS, while the predicted course is based on the ship's current speed and heading.
Step-by-step explanation:
The two pieces of information that are automatically calculated by the Electronic Chart Display and Information System (ECDIS) for a watchstander are the ship's position and its predicted course. The position is continuously updated via GPS, and the calculation of the predicted course is based on the ship's current heading and speed, taking into account any course changes that have been programmed in. This enables the watchstander to assess risks, manage the ship's route and make necessary adjustments for a safe and efficient journey.
Learn more about ECDIS