The US Navy says it will soon use armed, robotic patrol boats with no sailors on board to escort and defend warships in sensitive sea lanes.
The technology, adapted from NASA’s rovers on Mars, will transform how the US Navy operates and is sure to raise fresh questions and concerns about the widening role of robots in warfare.
The US Office of Naval Research yesterday released the results of what it called an unprecedented demonstration in August involving 13 robotic patrol craft escorting a ship along the James River in Virginia.
In a simulation, five of the robotic patrol boats guarded a larger ship, while eight others were ordered to investigate a suspicious vessel. The unmanned patrol boats then encircled and swarmed the “target,” enabling the mother ship to move safely through the area.
The demonstration was conducted over two weeks and designed to “replicate a transit through a strait,” naval research chief Rear Admiral Matthew Klunder told reporters in a recent briefing. “It could be the Straits of Malacca, it could be the Straits of Hormuz.”
The demonstration was a “breakthrough” that goes far beyond any previous experiment, he said, adding that similar robotic craft likely will be escorting US naval ships within a year. The patrol craft, 11m-long vessels known in the military as rigid hulled inflatable boats, are usually operated by three or four sailors. Yet outfitted with the robotic system, a single sailor could oversee up to 20 of the vessels.
There were no shots fired in the demonstration, but Klunder said the robotic craft can be outfitted with non-lethal equipment, such as lights and blaring speakers, as well as 50-caliber machine guns and the vessels could fire on an enemy ship if ordered to do so by a sailor.
“We have every intention to use those unmanned systems to engage a threat,” the admiral said. “There is always a human in the loop of that designation of the target and if so, the destruction of the target.”
For the demonstration, researchers had fail-safe systems in place to avoid any mishaps. If communications with the patrol craft broke off, the vessels would go “dead in the water,” program manager Robert Brizzolara said.
If the boats malfunctioned in some way, there were two separate communications links that could be used to halt the vessel.
Unlike drone aircraft, the robotic boats are more autonomous and can carry out directions without being operated by a human at every step.
The boats move in sync with other unmanned vessels, selecting the best route while sensing obstacles. The US military sees the innovation as saving sailors’ lives and strengthening the navy’s edge, but skeptics warn of the dangers of using armed robots without sufficient rules and debate about their use.
The technology, which the navy has dubbed CARACaS, or Control Architecture for Robotic Agent Command and Sensing, is “very low-cost” and can be installed easily on the patrol boats or other ships, Klunder said.
“We’re talking thousands [of US dollars]. We’re not talking millions to adapt what we already have — existing craft in our fleet,” he added.
Evoking images from science fiction with fleets of robots waging war, Klunder said the system could be installed on larger naval ships.
The military unveiled the technology around the 14th anniversary of the attack on the USS Cole off the coast of Yemen, which killed 17 sailors and wounded 39 others.
“If we had this capability on that day, I’m sure we would have saved that ship,” Klunder said.
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