Which of the following would not be considered an input to the computer of a collision avoidance system?

In a collision avoidance system, the primary inputs are those that directly contribute to determining the current status and trajectory of the vessel. These typically include navigational data such as the ship's exact position, heading, and speed, which are crucial for calculating potential collisions with other vessels or obstacles.

The own ship's exact position obtained from a navigation satellite receiver provides vital geographical data that helps the system understand where the ship is located. Similarly, the gyrocompass heading gives the direction the ship is facing, and the speed from the Doppler log indicates how quickly the vessel is moving. These parameters form the core of situational awareness needed for effective navigation and collision avoidance.

In contrast, the wind velocity from an anemometer, while useful for navigation and operational purposes (such as sail adjustments), does not have a significant impact on determining the risks of collision with other vessels. It doesn't provide crucial information for calculating the ship's course and movement in relation to others. Therefore, it is not considered an input that is essential for a collision avoidance system's computations and assessments.