Pentagon eyes 3D-printed military boats made from volcanic fiber — non-conductive hulls add stealth capabilities while replacing a 6,545-mile supply chain, could scale to 25,000 vessels a year at forward bases

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Voltage Vessels hopes to allow the U.S. Navy to build boats where they're needed and reduce reliance on an overly long supply chain. The company claims that it can forward deploy its 3D printers in-theater and also increase output up to 15,000 metric tons annually.