The Coast Guard decommissioned USCGC Mustang on Tuesday in Seward, Alaska, after nearly 40 years of service, the service said in a news release.

“The decommissioning of Mustang is a bittersweet moment,” said Lt. Gabrielle Troise, the commanding officer. “It’s been my honor to be a member of the final crew, and I’m incredibly proud of the legacy we will leave behind within the community of Seward where Mustang has faithfully served since her commissioning.”

Mustang was the 10th Island-class cutter when it was commissioned on Aug. 29, 1986.

Stationed in Seward throughout its service, Mustang has responded to more than 200 search-and-rescue cases, and it has completed more than 2,000 law enforcement missions.

Island-class cutters — 110-foot, multimission platform boats designed for search and rescue, marine environmental protection and national defense — are being replaced by Sentinel-class Fast Response Cutters (FRCs), which will be better able to meet service needs. There are currently four FRCs homeported in Alaska, with two more scheduled for delivery.