This Day in Naval History – Sept. 18
1926 - Navy brings relief aid to Miami, FL, after a severe hurricane.
1936 - Squadron 40-T, based in the Mediterranean, established to protect U.S. interests and citizens around Iberian peninsula throughout the Spanish Civil War.
1941 - U.S. Navy ships escort eastbound British trans-Atlantic convoy for first time (Convoy HX-150). Although the U.S. Navy ships joined HX-150, which left port escorted by British ships on 16th, on night of 17 September, the official escort duty began on 18th.
1947 - National Security Act becomes effective
(Source: Navy News Service)