OVERVIEW: A helicopter-towed magnetic and acoustic multi-influence mine sweep is an airborne countermeasure system designed to clear naval mines by mimicking the magnetic and acoustic signatures of ships. It enables mine clearance from a safe distance by detonating influence mines before the actual vessel passes.

DETAILS: This system consists of a towed array deployed behind a helicopter that generates controlled magnetic fields and acoustic noise patterns replicating those of large ships. The magnetic component simulates the ship’s hull signature, while the acoustic emitter produces underwater noise similar to propulsion and machinery sounds. Together, these influences trigger magnetic, acoustic, and combined influence mines to detonate prematurely. The helicopter’s speed and altitude keep it well clear of the detonation zone, enhancing crew safety. This sweep technique is especially useful for rapid minefield clearance in littoral and open waters, facilitating safer passage for naval and commercial vessels.

ROLE SUMMARY:
Category: Mine Countermeasure
Primary Use: Neutralization of influence naval mines
Function: Generation of magnetic and acoustic signatures to trigger mines
Strong Against: Magnetic, acoustic, and combined influence mines
Weak Against: Contact-only mines, advanced mines with complex counter-countermeasures
Platform: Mine warfare helicopters equipped with tow cables and sweep arrays
Integration: Operates in conjunction with naval mine countermeasure doctrine and support vessels

SOURCE:
Janes Naval Mine Warfare Systems
https://en.wikipedia.org/wiki/Mine_sweeping