What safety measures should be observed when operating sonar equipment near other vessels?

The selection of minimal operational impact on other ships as the correct response highlights the importance of maintaining safety and navigation integrity when using sonar equipment. Operating sonar can produce sounds that may interfere with other vessels, potentially disrupting their navigation or causing confusion. By aiming for a minimal operational impact, operators ensure that sonar activities do not pose risks to nearby vessels, reducing safety hazards effectively.

This choice emphasizes a responsible approach to maritime operations, which is essential for fostering safe navigation. It recognizes the need to balance sonar operations with the presence of other ships, promoting cooperative maritime practices.

Other options, while plausible, do not encapsulate the broader concept of safety as effectively. Operating in deep waters might reduce encounters with vessels but doesn't address the implications of sonar use itself. Exclusive use of passive sonar can indeed minimize disturbance, but it may not always be feasible. Turning off equipment when ships are within 500 meters is a protective measure; however, it lacks a proactive approach to minimize impact comprehensively and may not consider varying operational circumstances where maintaining sonar might be necessary for safety.