>> With the invention of modern navigational tools, the lighthouse has become largely obsolete for maritime safety. But the lens invented for it lives on in sid

>> With the invention of modern navigational tools, the lighthouse has become largely obsolete for maritime safety. But the lens invented for it lives on in side mirrors used on trucks, solar panels, and photographic lighting equipment No. Just no. GPS has serious limitations. Lights of various sizes, lighthouses being the biggest, are still essential. A light not only provides a bearing to a known/fixed point but also gives you weather and visibility information. And since they do not rely on any on-ship equipment, they keep working during onboard power failures. Go tell a pilot that runway lights are irrelevant now that they can follow GPS down to a runway at night.