Comments sought on Port Sanilac lighthouse lantern

Associated Press

Port Sanilac – — The U.S. Coast Guard is inviting public comment on a plan to install a different type of lens in a lighthouse in the Lake Huron town of Port Sanilac.

The Fourth Order Classical Fresnel lens would be swapped for a modern “light emitting diode” lantern.

The Fourth Order lens was installed in lighthouses in the late 1800s and early 1900s. Back then, lighthouse keepers cleaned the lenses daily and covered them with a light cloth to prevent damage from the sun’s ultraviolet rays.

Now that lighthouses are automated and no longer staffed, the Coast Guard is removing those lenses. The one in Sanilac will be displayed in a local museum.

Comments can be sent to Wayne Kean of the Coast Guard Civil Engineering Unit at