🇮🇷 🤜 🇺🇸 A burning Saildrone Explorer unmanned surface vessel operated by the U.S. Navy was filmed from an Iranian boat in the Strait of #Hormuz . This surface #drone uses an unusual propulsion system based entirely on a wing sail and solar power . The Explorer is not equipped with any conventional engine at all. This allows the vessel to operate autonomously and collect intelligence for up to 12 months . #info #Iran #USA #USV #Navy