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3dprint permalink d printing maritime d printing north america sustainability transportation xl d printed boat hulls dprinted ferries aidriven navigation al seer marine autonomous ferries autonomous vessel regulation caracol co emissions reduction congestion relief department of transportation digital shipbuilding dubai electric ferries electric ferries federal transit administration ferry modernization great lakes ferries highspeed ferries holland shipyards group hydrofoil technology infrastructure investment and jobs act inland ferry networks lfam marad maritime policy maritime transport mississippi river multimodal transit roboat smart docking systems sustainable transportation us coast guard us waterways university of maine v group waterborne transport