Astranis is modernizing an essential piece of modern communications infrastructure—and doing it in its own urban factory. Once upon a time, San Francisco was a manufacturing town. For decades, the Union Iron Works built ships—such as the U.S. Navy’s U.S.S. Oregon (1893) and U.S.S. Wisconsin (1898)—in its plant on Pier 70 in the neighborhood now known as Dogpatch. In recent years, that sprawling, long-abandoned complex has been rehabbed and filled with office space, housing, retail, and art studios. Among its tenants are startup accelerator Y Combinator and HR platform Gusto, neither of which has much in common with the Union Iron Works.