Unmanned reef lights of the Florida Keys

The reef lights were intended to mark local hazards and did not need to be visible for as far as the reef lights that were erected near the Keys during the 19th century.

[a] By the time the lights in this list were erected, older lighthouses were being automated, and these new lights were designed to be automated from the start.

The lights resembled the older reef lights in having a wrought iron skeletal pyramidal structure on a screw-pile foundation.

They all originally had lanterns on their peaks, so that they looked like smaller versions of the older reef lights, but had no keeper's quarters.

A design for a standardized hexagonal pyramidal tower was developed in 1932 and used for the Smith Shoal and Tennessee Reef lights erected in 1933, and for the Cosgrove Shoal and Pulaski Shoal lights erected in 1935.