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Cruise ship used high-tech noise gun on attacking pirates
The Seattle Times ^ | November 8, 2005 | John Pain

Posted on 11/08/2005 6:10:31 PM PST by neverdem

Associated Press

MIAMI – The crew of a luxury cruise ship used a sonic weapon that blasts earsplitting noise in a directed beam while being attacked by a gang of pirates off the eastern coast of Africa, the cruise line says.

The Seabourn Spirit had a Long Range Acoustic Device, or LRAD, installed as a part of its defense systems, said Bruce Good, a spokesman for Miami-based Seabourn Cruise Line. The Spirit was about 100 miles off the coast of Somalia when pirates fired rocket-propelled grenades and machine guns as they tried to get onboard.

The subsidiary of Carnival Corp. was investigating whether the weapon was successful in warding off the pirates, he said. The ship's captain also changed its course, shifted into high speed and headed out into the open sea to elude the pirates, who were in two small boats, he said. He had no further details.

Device maker American Technology Corp. said earsplitting "bangs" were directed by trained security personnel toward the pirates. That, combined with ship maneuvers, caused the attackers to leave the area, the company said.

The LRAD is a so-called "non-lethal weapon" developed for the U.S. military after the deadly 2000 attack on the USS Cole off Yemen as a way to keep operators of small boats from approaching U.S. warships.

The military version is a 45-pound, dish-shaped device that can direct a high-pitched, piercing tone with a tight beam. Neither the LRAD's operators or others in the immediate area are affected.

American Technology, based in San Diego, compares its shrill tone to that of smoke detectors, only much louder. It can be as loud as about 150 decibels, while smoke alarms are about 80 to 90 decibels.

The devices have been deployed on commercial and naval vessels worldwide since summer 2003, the company said.


TOPICS: Business/Economy; Crime/Corruption; Extended News; Foreign Affairs; Government; News/Current Events; Technical; US: District of Columbia; War on Terror
KEYWORDS: banglist; lrad; maritime; piracy; pirates; seabournspirit; somalia; sonicweapon
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To: neverdem

"Device maker American Technology Corp. said earsplitting "bangs" were directed by trained security personnel toward the pirates."

These weapons should not be aloud. Harmful to dolphins and whales. :)


21 posted on 11/08/2005 7:17:47 PM PST by Sertorius (A hayseed with no Greek and dam^ proud of it)
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To: neverdem

Disney should send one of their cruise ships into the Indian Ocean with machine guns hidden on it and advertise the adventure as "Pirates of Somalia Cruise" passengers could dress up as Mickie Mouse and take pot shots at the pirates that attack.


22 posted on 11/08/2005 7:19:54 PM PST by Sertorius (A hayseed with no Greek and dam^ proud of it)
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To: Wiseghy

23 posted on 11/08/2005 7:33:23 PM PST by Boazo (From the mind of BOAZO)
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To: AFPhys

Wouldn't getting "hit" with the sound waves cause physical discomfort or even tissue damage?


24 posted on 11/08/2005 7:36:45 PM PST by Grizzled Bear ("Does not play well with others.")
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To: Boazo

I'd guess that would create loud noises that the bad guys might find "uncomfortable."


25 posted on 11/08/2005 7:38:05 PM PST by Grizzled Bear ("Does not play well with others.")
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To: neverdem
The LRAD would probably have been useful when the Ismamists were using mosques as bases in Iraq. Just surround the mosque with LRADs and aim them in every window. It would have at least made it uncomfortable inside -- and there could be no complaints about defiling religious sites.
26 posted on 11/08/2005 7:43:42 PM PST by USFRIENDINVICTORIA (")
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Comment #27 Removed by Moderator

To: neverdem

I think a cruise ship will wind up being the next 9-11. Think about it, its so easy and a good test case was already done when they bombed the USS Cole.

Imagine two fishing trawlers, one with 5K kilo's of explosives and the other with gunmen. They can leave from any port in the world and travel unchalleneged to their target. Bomb boat explodes, mega cruise ship sinks in less that 15 minutes, gunmen with AK's to clean up everyone else. Total atackers less then 19 men and a death toll of many thousand, well eclipsing 9-11.

The sound generator and even heavy weapons wouldn't do you much good since you would probably not understand whats going on until its too late, and we cant have a destoyer follow every cruiseship wherever it goes.


28 posted on 11/08/2005 7:57:11 PM PST by spookadelic
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To: Sertorius

Like the Q-Boats, eh?


29 posted on 11/08/2005 8:03:40 PM PST by Gondring (I'll give up my right to die when hell freezes over my dead body!)
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To: AFPhys
From the box of inexpensive foam earplugs I have:

Attenuation vs. Frequency
36.3 dB @ 125 Hz
38.5 dB @ 250 Hz
41.5 dB @ 500 Hz
39.4 dB @ 1.0 kHz
39.7 dB @ 2.0 kHz
46.3 dB @ 4.0 kHz
46.4 dB @ 8.0 kHz

These are nothing special earplugs. Professional earplugs are better. Damage to one's hearing is function of both sound pressure and time. Rock concerts are commonly in the 110 to 120+ dB sound pressure range near the stage. At those sound pressure levels it takes accumulated time to do permanent damage (10 minutes is unlikely to cause permanent damage). Long periods can easily cause damage at these levels.

The 150 dB sound pressure reported in this article is likely at or near the source. With 40 dB of attenuation from the earplugs the sound pressures would be around 110 dB even close to the source. No hearing damage will occur unless it is present for a long period of time. In addition it would only be real annoying, but not loud enough to drive you back.

The sound level drops 6 dB every time you double the distance from the source in open space. If the sound pressure is 150 dB 1 meter from the source, it would drop to 120 dB at 32 meters (about 106 feet) away. With earplugs it would be quieter than the typical smoke detector.

Typical home speakers produce about 96 dB sound pressure levels at 1 watt input power at 1 meter. A 100 watt amplifier could drive those speakers to 116 dB sound pressure levels before clipping (per channel).
30 posted on 11/08/2005 8:03:51 PM PST by DB (©)
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To: Wiseghy

Wasn't the Mk19 automatic 40-mm grendade launcher originally developed by the US Navy?


31 posted on 11/08/2005 8:05:08 PM PST by Gondring (I'll give up my right to die when hell freezes over my dead body!)
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To: thebaron512

I don't.


32 posted on 11/08/2005 8:11:05 PM PST by DB (©)
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To: DB

And earplugs covered by earmuffs... even more protection.


33 posted on 11/08/2005 8:11:36 PM PST by Gondring (I'll give up my right to die when hell freezes over my dead body!)
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To: spookadelic
I think a cruise ship will wind up being the next 9-11.

Interesting. I hope the FBI, etc. are considering that possibility.

34 posted on 11/08/2005 8:16:20 PM PST by ladyjane
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To: Gondring

And if they send the same guys back, who are now deaf, they won't need any ear plugs at all.


35 posted on 11/08/2005 8:21:34 PM PST by Cold Heart
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To: neverdem
I thought I read on another thread this was a 21st century fog horn to get attention, not a "weapon". But, whatever works to ward of pirates...
36 posted on 11/08/2005 8:21:40 PM PST by operation clinton cleanup
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To: manwiththehands
150 decibels?

That kind of sound could peel paint!

The only thing I can say about that is that is should have been 250 decibals.

Make their ears bleed.

37 posted on 11/08/2005 8:24:45 PM PST by Malsua
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To: 359Henrie
Yes, ma deuce is a tad loud.

But as ship as big as that one should probably have something even larger. A couple of single barrel 20mm cannon would surely discourage the snot right out of 'em. They were common secondary and anti-aircraft armament on torpedo boats, submarines, and other light vessels. Heck something that big could mount a 4 or 5 inch deck gun. Liberty mounted at least one, and more often two, a 3 inch forward and 5 inch aft, along with 10 or so 20 mm cannon, and they were much smaller than a modern cruise ship.

My uncle was Naval Armed Guard on the SS William Clark, Torpedoed and sunk by U.354 in Greenland Sea at approx.71.05N 13.10E on 4 Nov 42.)

Uncle Lennie survived the War, but some of his toes did not. (Frostbite, it's dang cold in the Greenland sea in November.)

38 posted on 11/08/2005 8:42:53 PM PST by El Gato
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To: neverdem; Fred Nerks; All
The crew of a luxury cruise ship used a sonic weapon that blasts earsplitting noise in a directed beam while being attacked by a gang of piratesTERRORISTS off the eastern coast of Africa, the cruise line says.
39 posted on 11/08/2005 8:44:29 PM PST by jan in Colorado (As Rush predicted...the Dems are imploding!)
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To: El Gato

Concur, but I think they have problems with lifeboat drills, much less GUNNERS, man your battle stations.


40 posted on 11/08/2005 8:48:12 PM PST by 359Henrie
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