Anduril Industries, a US defense technology company, is investing $6.6 billion to advance the manufacturing of critical components for US Navy submarines. This move has brought its cooperation with South Korea's HD Hyundai into focus and raised the possibility of deepening collaboration between the two companies in submarine manufacturing and smart shipyards. HD Hyundai has expressed openness to expanding cooperation, but the two companies have not yet held specific discussions regarding their involvement in this project.