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The US military's massive unmanned 'Manta Ray' submarine cleared its first sea test
The Manta Ray, built by defense contractor Northrop Grumman ... UUVs to conduct operations amid conflicts in the Red Sea and ...
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US Navy tests out new ‘Manta Ray’ drone that can stunningly hibernate on the sea floor for ‘very long periods — without even having to refuel
Dubbed the “Manta Ray” because its slick design ... vehicles — which it will use to fight against Russia’s Black Sea fleet — while Great Britain and Australia are developing similar ...