Huntington Ingalls Industries subsidiary
Ingalls Shipyard in Pascagoula, Mississippi, was awarded the $487.1 million construction contract on April 30, 2013. Construction officially began on October 7, 2013 with a ceremony marking the cutting of the first 100 tons of steel.
Munro was launched at Pascagoula on September 12, 2015 and christened there on November 14, 2015. On June 18, 2019, the crew participated in capturing a
narco-submarine carrying 17,000 pounds of cocaine in the eastern Pacific Ocean. The total amount of drugs seized was valued at US$232 million, representing one of the largest drug seizures to date. Video of the incident was later made available on both news and military websites. The video shows the Coast Guard ordering the submarine to stop, followed by Coast Guard personnel jumping aboard the still-moving submarine and forcing the hatch open, leading to the surrender of the submarine's crew. On June 24, 2025 USCGC
Munro was deployed for the rescue of
Morning Midas, a Liberian-flagged cargo ship managed by UK-based Zodiac Maritime, which caught fire about 300 miles south of
Alaska. On January 7, 2026, USCGC
Munro captured the Russian
tanker Marinera (renamed Bella 1) south of Iceland as part of
Operation Southern Spear. ==See also==