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

May 15

1820  Congress declared the foreign slave trade to be piracy and instituted the death penalty for any U.S. citizen engaged in the slave trade.

USRC Naugatuck/aka E. A. Stevens (1862) Photo #: NH 58871 Line engraving published in Harper’s Weekly, circa spring 1862, when the gunboat was operating in the Hampton Roads area, Virginia. U.S. Naval Historical Center Photograph. http://www.history.navy.mil/photos/sh-usn/usnsh-n/naugatck.htm

1862 Semi-submersible ironclad USRC Naugatuck participated in bombardment of Drewry’s Bluff (James River) after accompanying USS Monitor in its engagement with CSS Virginia and engaging in an attack on Sewell’s Point. USRC Naugatuck would continue in service until 1889.

US Coast Guard Academy, New London, CT. Hamilton Hall center foreground.

1931  Treasury Secretary Andrew W. Mellon laid the cornerstone of Hamilton Hall, the first building under construction at the “new” Coast Guard Academy in New London, Connecticut.

The Cunard-White Star limited liner RMS Olympic, sister to the Titanic, passes very close aboard to the LV-117 on the Nantucket station in early January 1934. The light ship had been rammed already once that year in the fog, and the following May the Olympic actually collided with LV-117 and sent it to the bottom in seconds. Four crewmen went down with the ship while the Olympic rescued the remaining seven crewmen. Three of these men died later from injuries and exposure. The British Government paid for the construction of LV 112 as reparation for the accident. ref: US coast Guard

1934  The White Star Line passenger vessel RMS Olympic, in a dense fog, rammed and sank the lightship LV-117 on the Nantucket Shoals station.  Olympic, which had been homing in on the lightship’s radio beacon very accurately, failed to steer clear in time.  Seven of the lightship’s 11 crewmen were killed.  The White Star Line agreed to fund a new lightship.

USS Forsyth (PF-102) Tacoma Class frigate. As a weather ship, she would have had the after 3″ gun replaced by a balloon shelter.

1945  On 12 May, the Coast Guard-manned frigate USS Forsyth (PF-102) was called off her weather station to search through haze and fog for a German submarine that was attempting to surrender.  Three days later Forsyth joined Sutton (DE-771) in accepting the surrender of U-234 at 46º 39′ N. x 45º 39′ W.  This submarine was carrying a German technical mission and supplies, including a cargo of uranium, to Tokyo.  Earlier, two Japanese passengers on board committed suicide rather than surrender.

USS/USCGC Bangor (PF-16/WPF-16) Photographed in 1945-1946, while configured as a weather reporting ship with a balloon hangar aft. Courtesy of Donald M. McPherson, 1974. U.S. Navy photo NH 78996. USS Forsyth would have looked like this at the time.

USCGC Modoc

1975  USCGC Modoc seized the Polish fishing vessel Kalmar 10 miles off Monterey, California, for fishing inside the 12-mile limit and escorted her to San Francisco.

USCGC Gallatin WHEC -721 (378), USCGC Rockaway WHEC-377 (311), and USCGC Spencer WHEC-36 (327) moored at Governor’s Island

1996  The Coast Guard formally closed Governors Island.  The Army left the base in the early 1960s and the Coast Guard took it over on June 3, 1966 as a way to consolidate its operations in the New York Area.  At the height of Coast Guard involvement on the island over 4,600 people lived and worked there.

Governors Island U.S. General Services Administration map; indicates U.S. Coast Guard usage, 1995

1997  Coast Guard Auxiliarist Frank Mauro, while assigned to Coast Guard UTB 41351, rescued nine victims who had been forced into the water after the strong current crushed their boat.  He was awarded the Gold Lifesaving Medal for his heroic actions.