What is the general purpose of taking sonar readings?

The general purpose of taking sonar readings is primarily to detect submarines and underwater hazards. Sonar technology emits sound waves into the water and listens for their reflections off objects. This allows vessels to create a detailed map of the underwater environment, identifying the presence of submarines, shipwrecks, rocks, and other potential hazards that could threaten navigation or operations.

While locating missing ships, measuring water currents, and assessing marine life are all important activities related to marine operations, they are not the primary function of sonar technology. Sonar serves as a critical tool for ensuring safe passage and operational effectiveness in naval and maritime contexts by providing accurate information about what lies beneath the surface.