U.S. Coast Guard (USCG)

On January 28, 1915 the U.S. Coast Guard (USCG) was established, merging the Revenue Cutter Service established August 4, 1790 and U.S. Lifesaving Service established in 1878. In the summer of 1941, several U.S. Coast Guard vessels in Hawaii were placed under the jurisdiction of the U.S. Navy (USN) and assigned to the local defense force of the 14th Naval District and had their armament increased for patrol duty and anti-submarine duty. On November 1, 1941 under Executive Order 8929 the U.S. Coast Guard was transferred to the U.S. Navy (USN).

Active-class patrol boat
USCGC Active (WPC-125, WSC-125)  sold 1963 fate unknown
USCGC Agassiz (WSC-126)  transfered to the U.S. Merchant Marine Academy as Agassiz fate unknown
USCGC Alert (WSC-127, WMEC-127)  sunk October 31, 2021 Hayden Island and removed
USCGC Bedloe (WSC-128, USCGC Antietam)  sunk September 14, 1944 in a storm
USCGC Jackson (WSC-142)  sunk September 14, 1944 in a storm
USCGC Reliance (WSC-150)  scrapped 1948
USCGC Tiger (WSC-152)  sold as Polar Merchant used as a floating hull at Tyee Marina

158' auxiliary tug (WAT)
USCGC Shawnee (WAT-54)  decomissioned 1970 ultimate fate unknown

213' Medium Endurance Cutter (WMEC)
USCGC Acushnet (USS Shackle ASR-9)  transfersed to the USCG as Acushnet (WMEC-167) in June 29, 1946

Lake-class Cutter
USCGC Itasca  between 1941-1945 transfered to the Royal Navy then returned to USCG scrapped 1950

311' Casco-class Seaplane Tender (WAVP)
USCGC Casco (WAVP-370, WHEC-370, USS Casco AVP-12)  sunk May 15, 1969 as target in Atlantic Ocean
USCGC Chincoteague (WAVP-375, WHEC-375 USS Chincoteague AVP-24, RPS Andres Bonifacto (PF-7)  transfered to the Philippines.
USCGC Mackinac (WAVP-371, WHEC‑371, USS Mackinac AVP-13)  sunk July 23, 1968 sunk as a target off Virginia

327' Treasury-class Cutter (WPG)
USCGC Taney (WPG-37)  museum ship as part of the Historic Ships in Baltimore Harbor, Maryland