Both international & inland which procedure(s) shall be used to determine risk of collision?
a) long-range radar scanning
b) systematic observation of objects detected by radar
c) watching the compass bearing of an approaching vessel
d) all of the above

Option D: All of above.

is the correct answer.

Risk of Collision can be defined as a chance when two different bodies start bearing same position after some time of following some courses/situations.

In order to determine risk of collision, many procedures are used. Some of them include procedures like Long-range radar scanning, Systematic observation of objects detected by radar and watching the compass bearing of an approaching vessel are used.

According to Rule 7 (Risk of Collision):

All accessible sources that are right according to the faced circumstances shall be used for each vessel so that the collision risks (if any) are determined easily.

answer; peter zenger;