Fourteen Foot Bank Light

Fourteen Foot Bank Light
Fourteen Foot Bank Light
Location Delaware Bay, Delaware
Coordinates
Year first lit 1888
Automated 1972
Foundation Cast Iron and Concrete Caisson
Construction Cast Iron
Tower shape Square
Height 40 ft
Original lens Fourth order Fresnel lens
Characteristic white flash every 9 s, red sector covers nearby shoal

Fourteen Foot Bank Light is a lighthouse in Delaware, United States, in the Delaware Bay near Bowers Beach. Built in 1885-1886 at the south end of Joe Flogger Shoal, it was the first lighthouse to be built using a pneumatic caisson. The wooden caisson structure was excavated to a depth of 23 feet (7.0 m) below the seabed, then filled with 2000 cubic yards of concrete. A cast iron base was meanwhile erected on the caisson as it sank. A house-like structure was built on top of the base, designed by H.A. Ramsay and Son of Baltimore. Engineers for the structure were Anderson and Barr, and the contractor was D.P. Heap.[1]

The light is eleven miles offshore, and therefore not visible from land.

References

  1. ^ Maynard, W. Barksdale (2008). "Kent County". Buildings of Delaware. Charlottesville: University of Virginia Press. p. 238. ISBN 978-0-8139-2702-2.