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The Oldest Crewed Deep Sea Submarine Just Got a Big Makeover

Wired

Alvin has been ashore getting a major upgrade at the Woods Hole Oceanographic Institution in Massachusetts, which operates the submersible on behalf of the US Navy. By the time Alvin’s makeover is wrapped up in late 2021, the storied submarine will rank among the most capable human-rated deep sea submersibles in the world.