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Then, a second acoustic pattern emerged on sonar—faint but consistent. It did not match the torpedo. It came from another direction.
Underwater combat rarely involves a single object. When operators can track both a weapon and its likely origin, geometry begins to form. Angles and timing narrow the shooter’s probable location. What begins as defense quickly evolves into pursuit.
Within minutes, a helicopter lifted off from the carrier’s deck carrying dipping sonar equipment. Unlike hull-mounted systems, a helicopter can search vertically, layer by layer, extending detection range far beyond the ship itself. As it moved into position, surface escorts adjusted their spacing, tightening the operational net.