This Day in History: U.S. Coast Guard sinks a German submarine

Not really.

MAJ Dale E. Wilson, Ph.D. there were 2 in Outer-banks/ Morehead city ports sunk just off the coast line. Several more " maybes " further out. As well as merchant shipping being sunk at will along the coastline. That is until pressure was applied to the person in charge of the area and the guy gave in and used the advice given to him a year before by the British Admiralty about blacking out the cities and towns nearest the shipping ports and lanes.
Seems our fellow that was in charge of protecting the ports truly hated his British counterparts and blatantly did not black out the coastline. Just for spite. Before he took that advice , the U-boats were sinking ships in port and along the inlets by way of silhouetting the ships by the lights of the towns and ports in the background.
Just think of all the materiel and Lives lost just because one American chose willingly to not take proven advice because they hated the one giving it.