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

March 18

1909  Stations Holly Beach and Hereford Inlet, New Jersey: the schooner C.B. parted its chain while weighing anchor.  She set a distress signal which was discovered by the lookouts at both stations.  The surfboats proceeded to the scene and surfmen swept for the chain and assisted in securing it on board.

USCGC Ingham (WPG-35) underway in heavy seas, circa 1941-1944, location unknown.
US Coast Guard photo # 2000225945

1943  USCGC Ingham rescued all hands from the torpedoed SS Matthew Luckenbach. (Ingham was the most decorated vessel in the Coast Guard fleet and was the only cutter to ever be awarded two Presidential Unit Citations.)

131107-N-WX059-125 PEARL HARBOR (Nov. 7, 2013) The Bangladesh Navy Ship (BNS) Somudra Joy (F-28) arrives at Joint Base Pearl Harbor-Hickam for a scheduled port visit. From 1972 to 2012 the ship was known as the U.S. Coast Guard Hamilton-class high endurance Cutter USCGC Jarvis (WHEC-725). (U.S. Navy photo by Mass Communication Specialist 2nd Class Sean Furey/Released)

1967  The 378-foot high endurance cutter Hamilton, first in her class, was commissioned.  This was the first class of major vessels in the U.S. government’s inventory that were powered by jet turbines. (By then the first five WMEC210s, all CODAG powered, had already been commissioned. The turbines on the 378s were literal Jet engines, being the same engines used on the Boeing 707s)

95 foot Cape Class WPB

1991  CGC Cape Hatteras (WPB 95305) was decommissioned.  She was the last 95-foot patrol boat in the Coast Guard.  She was then transferred to Mexico.

1996  The single-hulled barge San Gabriel buckled and split open in rough seas, rupturing two tanks and spilling 210,000 gallons of oil in the Houston Ship Channel near Galveston, Texas.  Coast Guard Marine Safety Unit (MSU) Galveston established a joint command structure with local agencies and private contractors to isolate and then clean up the spill.  Personnel from the Gulf Strike Team, MSO Houston, MSO New Orleans, Aviation Training Center Mobile, and the 8th District supplemented MSU Galveston.  The majority of the spill was cleaned up in three days.

U.S. Coast Guard Cutter THETIS (WMEC-910) , US Navy photo ID:J3103SPT95001725 / DNST9800595

2000  CGC Thetis seized F/V Viviana II which was grossly overloaded with 234 Ecuadorean migrants.  The vessel and the migrants were turned over to the Ecuadorean Navy.

Panamanian motor vessel Gatun during the largest drug bust in United States Coast Guard history (20 tons of cocaine) off the Coast of Panama. Exhibit 10 (2 of 3) from the U.S. Government’s Memorandum of Law in Support of Pretrial Detention in the case of Joaquin “Chapo” Guzman, described as 19,000 kilograms of cocaine aboard a maritime vessel en route from Colombia to Mexico seized March 18, 200

2007  The Coast Guard made the largest cocaine seizure in its history to date when CGCs Hamilton and Sherman seized 42,845 pound of cocaine aboard the Panamanian-flagged M/V Gatun off the coast of Panama.  Gatun was first located by a HC-130 on March 17.