In 1859, Martha Coston made a landmark advancement with her invention of the Coston flare system, revolutionizing maritime communication. This system of flares enabled ships to efficiently relay crucial information, markedly enhancing naval and commercial fleet safety. Particularly advantageous in poor visibility or nighttime conditions, it enabled ships to identify themselves, signal distress, and send messages over distances. Quickly adopted by the U.S. Navy, it set new standards in navigation, showcasing women's contributions to 19th-century technology.