The first lighthouse was built in 1852 of cast iron made at the Baltimore foundry of Murray and Hazlehurst , and was pulled down during the Civil War .
Union warships could not use it as a navigational aid .
The first lighthouse was built in 1852 of cast iron made at the Baltimore foundry of Murray and Hazlehurst , and was pulled down during the Civil War so that Union warships could not use it as a navigational aid .