I am not convinced I fully understand all of what is transpiring here. This is not all that it seems (or is it) ??
The Coast Guard Contract for the Legend-class was purportedly already cancelled prior to this recent decision for the Navy to procure a modification of these Coast Guard cutters!
I read that the Department of Homeland Security (DHS) cancelled the specific contract for the 11th Legend-class NSC, the planned USCGC Friedman (WMSL-760), on June 5, 2025. The reason given was the vessel was significantly overdue and over budget; though construction began in 2021, it was nowhere near completion by its 2024 deadline. Purportedly the Coast Guard fleet was thus capped at 10 active vessels, with the final ship, USCGC Calhoun, having entered service in April 2024.
Here is a reference:
Ingalls, Coast Guard Scrap 11th National Security Cutter Over Contract Impasse, Says HII
And then now we are seeing,
this same (overdue/overbudge) Legend class Coast Guard cutter, being selected by the US Navy.
This does lead one to speculate that the US Navy decision may in no small part be due to a plan to assist the shipyard and naval construction industry to keep the overdue and over-budget Legend class production continuing.