William Hart was commissioned on September 26, 2019, by Rear Adm. Kevin Lunday after arriving in Honolulu after a 140-day pre-commissioning deployment from Key West, Florida. A celebration was held on September 26, 2019, to celebrate the commissioning.[2]
In June 2021, she completed her first Command Assessment of Readiness for Training and Tailored Ship's Training Availability with a 96% score.[2]
In September 2021, she took part in the rescue of a 67-year-old man from the S/V Epic after it was lost at sea for nine days.[2]
Between October and November 2021, she completed a second unsupported IUU patrol in Oceania for another 36 days.[2]
Between January and February 2023, she partook in Operation Aiga, which was another 42-day IUU patrol.[4]
Namesake
She is named for William C. Hart, a sailor of the Coast Guard who earned the Gold Lifesaving Medal when he jumped off CG-213, which he was commanding, to save a member from the Thomas Tracy who had fallen overboard during a storm.[5]