Tasked with mine detection and eradication in the Persian Gulf, the US Navy has sent a fleet of unmanned submarines to help keep the Strait of Hormuz open in Iran. Dubbed the SeaFox, each vehicle houses an underwater TV camera, sonar and a dose of explosives. Tipping the scales at less than 100 pounds, the subs are about four feet in length and are controlled via fiber optic cable that sends the live feed back to the captain of each ship. SeaFoxes can dive to depths of 300 meters and boasts a top speed of six knots
