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
https://www.tomshardware.com/3d-printing/us-navy-pitched-3d-printed-inflatable-boat-for-maritime-defense-six-meter-vessel-combines-recycled-petg-plastic-with-chopped-basalt-fiber-for-better-strength-water-resistance-and-stealth