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Pirates Thwarted by Sonic Weapon

Kristian Hermansen was one of dozens to submit a story about would be pirates attempting to take control of a cruise ship of the coast of Africa, only to be twarted by some sort of sonic weapon known as an LRAD, or Long Range Acoustic Device.

21 of 599 comments (clear)

  1. And if it wasnt for.. by mdobossy · · Score: 5, Funny

    And if it wasn't for you pesky kids and your LRAD, I would have gotten away with it too!

    1. Re:And if it wasnt for.. by Overly+Critical+Guy · · Score: 5, Funny

      You're all units in my game of Civilization IV. Those "pirates" were the barbarian Galleon unit trying to take on my uber destroyer unit. I used my Future Tech to take it out.

      --
      "Sufferin' succotash."
  2. Dupe by grahams · · Score: 5, Funny

    How many times are we going to have to read stories about music labels putting up false album tracks containing dreck such as Ashlee Simpson in place of Metallica? We get it, the labels don't like pirates....

  3. Too bad it doesn't use the brown note by technoextreme · · Score: 5, Funny

    I think it would be more effective than just giving them a headache.
    Pirate:Argggg we've popped our pants. Run.

    --
    Ooo man the floppy drive is broken. No wait. The computer is just upside down.
  4. The pirates are dying off anyway... by Anonymous Coward · · Score: 5, Funny

    Global Warming is having a direct and measurable impact on the endangered pirate population according to The Flying Spaghetti Monster theory,
      http://en.wikipedia.org/wiki/Flying_spaghetti_mons ter
    "Global warming, earthquakes, hurricanes, and other natural disasters are a direct consequence of the decline in numbers of pirates since the 1800s. A graph showing the inverse correlation between the pirates and global temperatures was also provided. This component of the theory highlights the logical fallacy of correlation implying causation. "

  5. Re:Wikipedia reference by Anonymous Coward · · Score: 5, Funny
  6. Natural in some humans by pogofish · · Score: 5, Funny

    Oddly enough, my wife has one of those built in.

    --

    A man without a God is like a fish without a bicycle.
  7. Pirates?! Rawk! by ottffssent · · Score: 5, Funny

    Pirates, man! I mean, a real actual honest-to-$deity story. On Slashdot. About pirates! I mean, PIRATES. The ones with hats. And parrots. I never thought I'd see the day.

  8. Ba dum bum by DarkHand · · Score: 5, Funny

    So a pirate walks into a bar with a steering wheel and an active LRAD device on his crotch. The bartender says: "There's a steering wheel and an LRAD device on your crotch!" The pirate says: "Yar, I know! They're both driving me nuts!"

  9. Weekly piracy report by __aagctu1952 · · Score: 5, Informative

    Oh yes. Pirates are as active as ever. Only nowadays they have machine guns and RPGs instead of blunderbusses and cannons...
    Just read IMB's Weekly Piracy Report for an idea of how active and how dangerous modern pirates are.

  10. New Headline by AxsDeny · · Score: 5, Funny

    Timbers Shivered by Shivering Timbres

    --

    zork% mv *.asp /bin/darkroom
    283 files eaten by a grue
  11. Re:Brown noise? by Loconut1389 · · Score: 5, Funny

    me? I think the parent post is hillarious. Military and cruise ships using 150 decibel brown noise weapons? Now that's an idea!

    Reminds me of an old joke... Now this isn't the exact version, but its as close as I can remember...

    Whenver the captain of an old spanish galleon was heading into battle, he always asked his assistant to fetch him his red pants so that if he were to be injured and bleed, his crewmen would not see the blood and lose hope. One day, they were heading into battle against a massively powerful enemy. The captain saw the assistant already going to fetch the red pants and shouted, "Stop! This time, get me my brown pants!"

  12. LRAD Countermeasure? by Jherek+Carnelian · · Score: 5, Funny

    Has anyone had a chance to play with one of these? (Or been played with by someone with one of these like at the 2004 republican convention in NYC? http://en.wikipedia.org/wiki/LRAD)

    Since it is just sound, and apparently high-frequency sound (thus relatively low-energy vs low-frequency sound) I wonder if something as simple as noise-cancellation headphones would provide significant protection against LRAD usage.

    Will we see pirates wearing Bose noise-cancellation headphones and listening to pirated music while they pirate real ships now?

    1. Re:LRAD Countermeasure? by Reverberant · · Score: 5, Informative
      I wonder if something as simple as noise-cancellation headphones would provide significant protection against LRAD usage.

      Noise cancelling headsets (and noise cancelling technologies in general) don't work all that well for high-frequency sounds since the impinging noise and the 180-degree shifted sounds need to be perfectly aligned at the ear to cancel each other out. That's difficult to do with high-frequency sounds because of the relatively small wavelengths involved.

      Now passive hearing protectors (e.g. ear plugs) work very well at high frequencies. However, the best ear plugs reduce sound by 20-30 dB at high-frequencies. If the LRAD literature is true, and it can produce sound levels of 150 dB, than ear plugs can reduce it to 120 dB, which is still uncomfortably loud.

  13. Re:Wikipedia reference by Philip+K+Dickhead · · Score: 5, Funny

    The article seems to omit the fact that this is possible and effective against the pirates, because they play COUNTRY 'MUSIC' through this thing.

    --
    "Speaking the Truth in times of universal deceit is a revolutionary act." -- George Orwell
  14. Be Greedo by dada21 · · Score: 5, Interesting

    A bit OT but fun to know...

    Pirates do exist, and account for nearly $16b in losses annually. If you're interested in a career like Han Solo, piracy is an option.

    Most pirates today work between Eritria and Mumbai. Seychelles is very casual about accepting boats without valid port histories. The pirate ships are often large yachts with fast ciggy boats for docking. Glocks and Kalishies are the norm. The dress is much like the old pirate look -- bandanas, beards, loose shirts, etc.

    Pirate robbers make the news often, yet most pirates are smugglers (food, drugs, medicine and health equipment). Countries with US/UN embargoes pay well -- 400% over the white market rate.

    Cuba was easy money until 9/11, now we have our Coast Guard pretending to fight terrorism but actually destroying the free market in smuggling.

    Malaysia has a growing piracy need as the government gets more religious. Somalia and Sri Lanka both ignore the pirates like Seychelles.

    Take a trip to Dubai or Seychelles. Hook up with the right crowd and you can make 6 figures easily.

    Arrrrr!

    1. Re:Be Greedo by ceoyoyo · · Score: 5, Insightful

      Smugglers smuggling food, medicine and health equipment... there's something wrong when there's a market for smuggling such things.

  15. How many times do we have to reming you... by gg3po · · Score: 5, Funny

    ...to stop using their terminology. It's not *piracy*, it's infring... hold on, wait a sec... this is about real pirates, you say?!? Can't ... I don't... how to proceed...

    --
    ---
  16. Lifting content from wikipedia? by rsborg · · Score: 5, Informative
    Since you're just cutting and pasting portions of your content from wikipedia, why don't you just paste the link?

    Something you left out from the wiki content:
    "At maximum volume, it can emit a warning tone that is 151 decibels (1000 W/m) at 1 metre, a level that is very capable of permanently damaging hearing."

    I'm not sure I'd call that "an ideal use of this technology in private sector" as you put it... ethical concerns don't just go away if you're "private sector".

    --
    Make sure everyone's vote counts: Verified Voting
  17. The pirates are my cousins! by Anonymous Coward · · Score: 5, Interesting

    Hard to believe right? I am from the coastal city of Bosaso on the horn of Africa, and some of my relatives took pride in their high-seas piracy. I have always heard of illegal Japanese and Norwegian ships illegaly fishing in our shores, while Somalis, with not central government and coast guard, sat around in anger and frustration.

    This piracy started as a way to defend our coast-lines from illegal international fishing. Somalia hasn't had a government since 1990, and our fish resources became the loot of international fishing conglomerates. Others have used our coast to dump their waste, even nuclear waste.

    After the fall of the Somali government, our coast guard's ships and vessels were looted by tribes. Some of our ships and boats were sold to illegal fishing companies, which didn't go far but stayed to fish in our waters! While other boats stayed in the hands of tribal leaders and warlords who used them for piracy and people smuggling to the middle east, although more often as a vehicle for products and trade with Yemen, our neighbor to the North.

    It's funny how companies registered in Democratic developed nations, and pay their taxes there, are the ones looting our natural resources and using our sea and land to dump their waste.

    http://gurukul.ucc.american.edu/ted/somalia.htm

    http://www.mg.co.za/articlePage.aspx?articleid=249 733&area=/breaking_news/breaking_news__africa/

    http://somalinet.com/news/world/Somalia/1063

    I wish the international community would deploy high-tech sonic weapons to defend us against real theives, not just pirates, blinded and deafended by greed.

    - Mahammad Darwish

  18. Re:LRAD by Technician · · Score: 5, Informative

    Can you elaborate?

    Yes.

    Sending a 1Khz tone a long distance would require a large reflector to produce a relatively tight beam. Sending a 30 KHZ tone requires a much smaller reflector to deliver the acoustic power the same distance. The small dish sends high power signals. For example if we sent 30Khz and 31Khz, they would both travel in a well defined beam as a ~30Khz signal. Unfortunately we can't hear 30 Khz ultrasonic signals (except for a few audiophiles ;-). ) Air at high volume is not linear. For example you can compress air to several atmospheres. The reverse is not true. You can not draw several atmospheres of vacuum. You are limited by the hard limit of pure vacuum. Air compressing and expanding is non-linear.

    Now enter a couple very high intensity sound waves of two frequencies. Now you have non-linear mixing. In non linear mixing (just like in a radio reciever) you get out the 2 original frequencies + the sum and the difference. Therefore 30Khz + 31 Khz is 30Khz, 31Khz, 61Khz and 1Khz. Now you have delivered a very loud and painful 1Khz sound using the tight beam delivery of 30Khz with a small dish.

    --
    The truth shall set you free!