Based on the Coast Guard Historian’s timeline, https://www.history.uscg.mil/research/chronology/
With inspiration from Mike Kelso

April 25

1819  USRC Active captured the pirate vessel Irresistible in the Chesapeake Bay.

An engraving of the explosion that destroyed the Moselle. Courtesy of the Cincinnati & Hamilton County Public Library. Via Ohio Memory.

1838  The steamboat Moselle, with more than 265 passengers and crew aboard, departed from a landing near Cincinnati, Ohio for St. Louis.  Her boilers exploded soon after casting off, killing 136.  This was one of three catastrophic steamboat boiler explosions within as many months that forced the Federal Government to begin regulating merchant steam vessels.

1956  The U.S. Coast Guard issued new regulations for security screening of merchant seamen.  Changes in the screening program were made for the purpose of conforming with a recent U .S. Court of Appeals ruling (Parker V. Lester) which held that procedures used by the Coast Guard did not meet the minimum requirements of due process of law.  The legal background for the Coast Guard security program stems from the Magnuson Act, which authorized the President to issue rules safeguarding vessels and waterfront facilities when he found security endangered by a subversive activity. The President made such a finding in 1950 by Executive Order No. 10173 and directed the Coast Guard to set up and conduct the program.