From BBC World News
Passengers aboard the Seabourn Spirit, a luxury liner sailing off the coast of Somalia, came face to face last month with the growing problem of piracy, especially planned assaults and ocean hijackings using fast boats and sophisticated weapons.
In their defence against the pirates, the Seabourn Spirit's crew used an acoustic weapon that focused a deafening alarm sound on the attackers, hastening their retreat.
The International Maritime Bureau recommends that:
As the pirates go hi-tech, so ships must use more advanced technology in their defence.
Anti-piracy technologies endorsed by the bureau include an unmanned spy plane, the Inventus UAV, for aerial surveillance of risky waters.
Others include Secure-Ship, a 9,000 volt electric fence that when rigged around ship's deck stops the pirates from boarding, and ShipLoc, a hidden tagging device for ships that allows satellites to track ships on behalf of their owners even after a hijacking.
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