The US Coast Guard has been faced with delays in getting new polar icebreakers constructed...building of the first of 3 planned vessels, the USCGC Polar Sentinel, had not started as of July 2024, and completion is not scheduled before 2028. So, the Polar Security Cutter program--is proposing to acquire the commercial icebreaker Aiviq from a unit of Edison Chouest Offshore...the company operating the Nathaniel B. Palmer and (formerly) the Laurence M. Gould. The official procurement announcement (updated 4 March 2024) is here on sam.gov.
Aiviq was commissioned in 2012 and was originally chartered by Shell for work offshore of northern Alaska. It has also been described as an anchor handler. More recently it was used by the Australian program to resupply its stations in 2021-22 and 2022-23 due to delays in availability of their new supply vessel. Reports are that it will take several years to refit the vessel for Coast Guard service.
Two good references: first, this 5 March gCaptain article (source of the photo at the top of this page)...and this Wikipedia article about the Aiviq which I have edited.
A 22 July update...the US will collaborate with Canada and Finland in an effort to solve the challenges of getting new polar icebreakers. Construction of the first of the new US "Polar Security Cutters" at what was the VT Halter shipyard inn Pascagoula, MS (acquired along with the contract by Bollinger) has yet to begin, five years after the initial contract award per this 12 July gCaptain article.
And in mid-August, the Coast Guard announced that Aiviq would be homeported in Juneau, per this 15 August U.S. Naval Institute article.