Which technology is primarily used to reduce radiated noise from a ship?

The Prairie Air System is specifically designed to reduce radiated noise from a ship by creating a blanket of air bubbles around the hull. This system works by minimizing the contact between the hull and the water, thereby dampening the sound generated by the vessel's movements and operations. The reduction of radiated noise is critical for submarines and surface ships as it helps with stealth operations, making it harder for enemy sensors to detect them.

In contrast, sonar systems are primarily used for detection and navigation purposes, anticollision systems focus on avoiding collisions through detection and warning, and advanced radar systems are employed for surveillance and target acquisition. Each of these technologies serves a different purpose and does not address the specific need to minimize the ship's noise signature like the Prairie Air System does.