The Global Leader in Long Range Acoustic Hailing Devices

Maritime Communication & Safety

Navy / Coast Guard

In response to the deadly October 2000 attack on the USS Cole, LRAD Corporation created the acoustic hailing device (AHD) market by developing its proprietary Long Range Acoustic Device technology and systems.

LRAD systems broadcast highly intelligible voice communications and warning tones with focused acoustic output to clearly determine the intent of vessels not responding to radio calls, alter threat behavior and enlarge vessel standoff zones beyond 3,000 meters.


Naval forces throughout the world are equipping their fleets with LRAD systems as an essential component of their escalation of force (EOF) protocols. In uncertain situations, the EOF is increasingly initiated through hails and warnings broadcast by LRAD systems to potential threats and intruders.

LRAD provides captain and crew more time and distance to determine intent and distinguish between intruders, terrorist threats, fishing boats or commercial ships, and respond appropriately.

LRAD’s optimized driver and waveguide technology ensures every broadcast cuts through engine, wind and background noise and is clearly heard and understood by approaching vessels. Through the use of live or pre-recorded multilingual voice communications and warning tones, LRAD provides more time and distance to assess and respond to maritime threats, favorably resolves uncertain situations and saves lives.

LRAD’s broadcast range exceeds the CINCLANTFLT Naval Vessel Protection Zone for standoff distances for ships pier side, at anchor or in restricted waters. LRAD’s unmatched acoustic performance is also used to conduct interdictions at sea, for UNREPS, and many other naval duties.

From the hand portable LRAD 100X to the remotely operated LRAD-RX integrated with radar, cameras, high powered lights and other sensors, LRAD systems are rugged and built to withstand the harshest maritime conditions.

Coast Guard

Coast Guard services are experiencing increasing territorial water incursions and homeland security threats. LRAD’s attention commanding voice broadcasts and warning tones enable coastal defense personnel to determine the intent of vessels not responding to radio calls and enforce marine and littoral zone regulations.

During suspect boat interceptions, LRAD systems ensure the Coast Guard’s commands and instructions are clearly heard and understood over engine, wind and background noise.

Through the use of powerful voice commands and warning tones, LRAD determines intent at distance and is an essential component in all EOF protocols. LRAD systems have proven highly effective in anti-terrorism missions, failure to heed situations and boarding operations by determining intent, creating large standoff zones around Coast Guard ships, favorably resolving uncertain situations and saving lives on both sides of the Long Range Acoustic Device.

LRAD systems are in use in more than 70 countries around the world and are the only acoustic hailing devices that meet all U.S. Military requirements.

Contact LRAD Corporation for more information.