Fourteen Foot Bank Light is a lighthouse in the Delaware Bay near Bowers Beach, Delaware. 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 2,000 cubic yards (1,500 m³) 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.[3]

Fourteen Foot Bank Light

Fourteen Foot Bank Light
Location	near Bowers Beach Delaware Bay, Delaware
Coordinates	39.0482°N 75.1836°W / 39.0482; -75.1836
Tower
Constructed	1886
Foundation	Cast Iron and Concrete Caisson
Construction	Cast Iron
Automated	1972
Height	40 feet (12 m)
Shape	Square
Heritage	National Register of Historic Places listed place
Light
First lit	1888
Focal height	59 feet (18 m)
Lens	Fourth order Fresnel lens
Range	13 nmi (24 km; 15 mi) (white), 10 nmi (19 km; 12 mi) (red)
Characteristic	white flash every 9 s, red sector covers nearby shoal
Fourteen Foot Bank Light
U.S. National Register of Historic Places
NRHP reference No.	89000286[1][2]
Added to NRHP	March 27, 1989

The light is 11 miles (18 km) offshore, and therefore not visible from land. It was added to the National Register of Historic Places in 1989.[2]

References

External links

• Media related to Fourteen Foot Bank Light at Wikimedia Commons

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