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An 18.7-foot drone boat has brought back its first seabed maps for an Italian survey crew, holding its line on two 11-kilowatt pods that swivel and sweeping a strip of bottom seven times as wide as the water is deep, 210 feet across in 30 feet of water
1+ day, 21+ min ago (1120+ words) Sep 13, at 6:30am ET Figuring out the shape of a harbor bottom has always meant putting a boat on the water with people standing on it. You pay for the boat by the day and the crew by the day, and…...
A 24-foot drone boat that makes its own power from sun, wind and waves will tow a cable of microphones from a winch inside its keel, listening for submarines off Australia for months without refueling, and 40 of them are getting American arrays picked over four rivals
4+ day, 21+ min ago (490+ words) Sep 10, at 6:30am ET Hunting a submarine is mostly a listening problem. You tow a long cable full of microphones behind something, you keep that something as quiet as you possibly can, and then you wait. The awkward part has always…...
An 88-pound drone float went over the side of a sailboat above a trench north of the Antilles, sank 19,700 feet and climbed back five times, and a French lab got it to survive down there by giving up on titanium and building the hull out of composite
4+ day, 15+ hour ago (833+ words) Sep 9, at 3:30pm ET Every few months a number goes around about how much the ocean has warmed, and it gets quoted like somebody rowed out and took a reading. Somebody did, sort of. There are about 4,000 robot floats drifting out…...
A 30-kilowatt laser has to hold its beam on one square inch of a drone that is actively trying to get away, and the Army has just ordered dozens of them after four decades of burning targets on test ranges without ever buying a single one
6+ day, 13+ hour ago (393+ words) Sep 7, at 5:00pm ET That changed on September 2. The US Army awarded AeroVironment, the company behind the Switchblade drones, a $464.8 million agreement to deliver dozens of LOCUST X3 laser weapon systems under its Enduring-High Energy Laser program, or E-HEL. AV calls it…...
A 250-pound drone keeps working through 30-foot seas that would send a survey ship back to port, and the only moment weather can touch it is when it surfaces every six hours to talk, so if the pickup boat cannot come out it lands on the bottom and sleeps
1+ week, 23+ hour ago (274+ words) Sep 6, at 7:30am ET If the weather turns, the robot lands on the bottom and goes to sleep. One number I am skipping: NOAA’s page gives the cruise speed two different ways inside the same sentence, so I am leaving speed…...
Five 70-pound ground drones are riding in the brackets on the side of a Bradley where the explosive reactive armor normally bolts on, and they roll into the trench first, while the squad sitting behind that armor stays buttoned up on a hull from 1981
1+ week, 1+ day ago (863+ words) Sep 5, at 9:00am ET Bolt something to the side of a Bradley and you can probably guess what it should be. Those brackets are where explosive reactive armor goes, blocks that detonate outward when a shaped charge hits them so the…...
A 6.5-pound drone thrown off a dock by hand sprints across the surface at 8 mph, stops, dives 197 feet straight down for a reading and pops back up, and the Navy spent two days in August watching pods of them hunt other underwater drones in a harbor
1+ week, 2+ day ago (373+ words) Sep 4, at 2:00pm ET If you’ve been following our coverage of the Navy’s underwater drone problem, you’ve probably noticed the solutions keep getting bigger. A seabed fence stretching nearly a mile across a harbor floor. A 34-foot drone submarine that fires…...
A 39-foot drone boat wrapped in solar panels from bow to stern carries a turret under an armored hatch in its nose, gathers 24 kilowatt-hours a day against the 2.5 it spends holding position, and the yard that built the hull makes wake boats
1+ week, 4+ day ago (1067+ words) By: Chema Bonilla Díaz Moog announced on August 24 that it had demonstrated its Reconfigurable Integrated-weapons Platform, or RIwP, aboard Voltaic Marine’s AEU39 uncrewed surface vessel during the U.S. Navy’s Coastal Trident Demo. The turret sat inside the boat’s bow, under…...
A 39-pound tube shaped the way American sonobuoys have been shaped since 1942 pinged at underwater drones this summer, gave away its own position doing it, and sank, while a 21-inch reel unspooled nearby into a listening array and never made a sound
1+ week, 4+ day ago (732+ words) By: Chema Bonilla Díaz Sonar comes in two flavors and they want opposite things. Passive sonar listens and says nothing, which keeps you hidden and leaves you guessing about how far away anything is. Active sonar pings, tells you exactly…...
An 8.5-foot drone has been crawling the seafloor 13,100 feet under California on two watts, driving 32 feet at a time and then sitting 48 hours while it counts the oxygen the mud is breathing, and it has covered 6.8 miles in seven years
1+ week, 5+ day ago (580+ words) By: Chema Bonilla Díaz Deep-sea robots mostly work day shifts. A ship sails out, lowers one on a cable, films the bottom for a few hours and winches it back before dinner. That schedule is great for finding new animals…...