USS Rockford

USS Rockford (PF-48), a Tacoma-class frigate in commission from 1944 to 1945, thus far has been the only ship of the United States Navy to be named for Rockford, Illinois. She later served in the Soviet Navy as EK-18 and in the Republic of Korea Navy as ROKS Apnokkang (62).

USS Rockford (PF-48) painted in dazzle camouflage Measure 32, Design 16d, at Adak, Territory of Alaska, on 30 January 1945.
History
United States
Name	Rockford
Namesake	City of Rockford, Illinois
Reclassified	PF-48, 15 April 1943
Builder	Consolidated Steel Corporation, Wilmington, California
Yard number	533
Laid down	28 August 1943
Launched	27 September 1943
Sponsored by	Mrs. Harry L. Crotzer
Commissioned	6 March 1944
Decommissioned	26 August 1945[1]
Honors and awards	2 battle stars, World War II
Fate	Transferred to the Soviet Navy, 26 August 1945[2]
Acquired	Returned by Soviet Navy, 1 November 1949
Fate	Transferred to Republic of Korea Navy, 23 October 1950
Acquired	Returned by Republic of Korea Navy, 3 September 1952
Stricken	26 May 1953
Fate	Sunk as target, 30 September 1953
Soviet Union
Name	EK-18[3]
Acquired	26 August 1945[2]
Commissioned	26 August 1945[4]
Fate	Returned to United States, 1 November 1949
South Korea
Name	ROKS Apnok (62)
Acquired	23 October 1950
Fate	Irreparable damage in collision, 21 May 1952 Returned to United States, 3 September 1952
General characteristics
Class and type	Tacoma-class frigate
Displacement	1,430 long tons (1,453 t) light 2,415 long tons (2,454 t) full
Length	303 ft 11 in (92.63 m)
Beam	37 ft 6 in (11.43 m)
Draft	13 ft 8 in (4.17 m)
Propulsion	2 × 5,500 shp (4,101 kW) turbines 3 boilers 2 shafts
Speed	20 knots (37 km/h; 23 mph)
Complement	190
Armament	3 × 3"/50 dual purpose guns (3x1) 4 x 40 mm guns (2×2) 9 × 20 mm guns (9×1) 1 × Hedgehog anti-submarine mortar 8 × Y-gun depth charge projectors 2 × Depth charge tracks

Construction and commissioning

Originally classified as a patrol gunboat, PG-156, Rockford was reclassified as a patrol frigate, PF-48, on 15 April 1943. She was laid down on 28 August 1943, by Consolidated Steel Corporation in Los Angeles, California, launched on 27 September 1943, sponsored by Mrs. Harry L. Crotzer, and commissioned on 6 March 1944.

Service history

U.S. Navy, World War II, 1944–1945

Following shakedown off Los Angeles, Rockford, manned by a United States Coast Guard crew, reported to the United States Pacific Fleet and got underway on 25 June 1944 for the Southwest Pacific. On 2 July 1944 she attacked a Japanese submarine with depth charges, doing some damage. She made a second antisubmarine attack with Hedgehogs antisubmarine mortars on 7 July 1945. Continuing her voyage, she proceeded via Espiritu Santo to Australia, arriving at Cairns, Queensland, on 23 July 1944.

On 2 August 1944, Rockford moored in Milne Bay, New Guinea, and then operated on convoy escort duty and antisubmarine patrol off the New Guinea coast until 23 September 1944, when she made a brief run to Manus Island in the Admiralty Islands.

Rockford then returned to New Guinea, remaining there until 15 October 1944, when she began a voyage to the United States West Coast via Manus Island and Pearl Harbor, Territory of Hawaii. On 13 November 1944, during the final leg of the voyage, Rockford and the minesweeper USS Ardent (AM-340) attacked and sank the Japanese submarine I-12 midway between Hawaii and California; there were no survivors from I-12. In sinking I-12, Rockford and Ardent unwittingly had avenged the crew of the Liberty Ship SS John A. Johnson; on 30 October 1944, after sinking John A. Johnson, I-12 had rammed and sunk her lifeboats and rafts and then machine-gunned her 70 survivors, killing 10.

On 17 November 1944, Rockford arrived on the U.S. West Coast for scheduled repairs. After their completion, she reported for duty on 4 January 1945 to Commander, Alaskan Sea Frontier, for duty in the waters of the Territory of Alaska and the North Pacific, operating until August 1945 from Dutch Harbor, Cold Bay, and Adak as pilot vessel for the USS Disdain (AM-222) group.

Selected for transfer to the Soviet Navy in Project Hula – a secret program for the transfer of U.S. Navy ships to the Soviet Navy at Cold Bay in anticipation of the Soviet Union joining the war against Japan – Rockford began training her new Soviet crew at Cold Bay in August 1945.^[5]

Soviet Navy, 1945–1949

Following the completion of training for her Soviet crew, Rockford was decommissioned on 26 August 1945^[1] at Cold Bay and transferred to the Soviet Union under Lend-Lease immediately^[2] along with her sister ships USS Bisbee (PF-46), USS Gallup (PF-47), USS Muskogee (PF-49), USS Carson City (PF-50), and USS Burlington (PF-51). Commissioned into the Soviet Navy immediately,^[4] Rockford was designated as a storozhevoi korabl ("escort ship") and renamed EK-18^[3] in Soviet service. She soon departed Cold Bay bound for Petropavlovsk-Kamchatsky in the Soviet Union, where she served as a patrol vessel in the Soviet Far East.^[5]

In February 1946, the United States began negotiations for the return of ships loaned to the Soviet Union for use during World War II. On 8 May 1947, United States Secretary of the Navy James V. Forrestal informed the United States Department of State that the United States Department of the Navy wanted 480 of the 585 combatant ships it had transferred to the Soviet Union for World War II use returned, EK-18 among them. Negotiations for the return of the ships were protracted, but on 1 November 1949 the Soviet Union finally returned EK-18 to the U.S. Navy at Yokosuka, Japan.^[6]

Republic of Korea Navy, 1950–1952

South Korean sailors aboard Amnokgang (PF 62) at their battle stations on a 3-inch (76.2 mm) gun mounted on the forecastle of the ship.

Reverting to her original name, Rockford lay idle in the Pacific Reserve Fleet at Yokosuka until the United States loaned her to the Republic of Korea on 23 October 1950 for Korean War service in enforcing the United Nations blockade against North Korea and harassing enemy forces. She served the Republic of Korea Navy as ROKS Apnok (62). On 21 May 1952, she was escorting the U.S. Navy ammunition ship USS Mount Baker (AE-4) when Mount Baker struck her amidships, killing 25 and injuring 21 of Apnok's crew. The collision damaged Apnok beyond economical repair.^[7][8] South Korea returned her to the U.S. Navy on 3 September 1952 for disposal.

Disposal

Reverting to her original name and assigned a status of "inactive out of commission in reserve" by the U.S. Navy, Rockford was struck from the Navy list on 26 May 1953 and sunk as a torpedo target on 30 September 1953.

Awards

The U.S. Navy awarded Rockford two battle stars for her World War II service.

References

•  This article incorporates text from the public domain Dictionary of American Naval Fighting Ships. The entry can be found here.

1. NavSource Online: Frigate Photo Archive Rockford (PF 48) ex-PG-156 states that the U.S. Navy decommissioned Rockford on 27 August 1945, but Russell, Richard A., Project Hula: Secret Soviet-American Cooperation in the War Against Japan, Washington, D.C.: Naval Historical Center, 1997, ISBN 0-945274-35-1, p. 39, which includes access to Soviet-era records unavailable during the Cold War, reports that the United States transferred Rockford on 26 August 1945 and, according to Russell, the U.S. Navy decommissioned Project Hula ships simultaneously with their transfer to the Soviet Navy; see photo captions on p. 24 regarding the transfers of various large infantry landing craft (LCI(L)s) and information on p. 27 about the transfer of USS Coronado (PF-38), which Russell says typified the transfer process. As sources, Russell cites Department of the Navy, Ships Data: U.S. Naval Vessels Volume II, 1 January 1949, (NAVSHIPS 250-012), Washington, DC: Bureau of Ships, 1949; and Berezhnoi, S. S., Flot SSSR: Korabli i suda lendliza: Spravochnik ("The Soviet Navy: Lend-Lease Ships and Vessels: A Reference"), St. Petersburg, Russia: Belen, 1994.
2. The Dictionary of American Naval Fighting Ships Rockford article states that Rockford was transferred on 27 August 1945 and NavSource Online: Frigate Photo Archive Rockford (PF 48) ex-PG-156 repeats this. However, Russell, Richard A., Project Hula: Secret Soviet-American Cooperation in the War Against Japan, Washington, D.C.: Naval Historical Center, 1997, ISBN 0-945274-35-1, p. 39, which includes access to Soviet-era records unavailable during the Cold War, reports that the transfer date was 26 August 1945. As sources, Russell cites Department of the Navy, Ships Data: U.S. Naval Vessels Volume II, 1 January 1949, (NAVSHIPS 250-012), Washington, DC: Bureau of Ships, 1949; and Berezhnoi, S. S., Flot SSSR: Korabli i suda lendliza: Spravochnik ("The Soviet Navy: Lend-Lease Ships and Vessels: A Reference"), St. Petersburg, Russia: Belen, 1994.
3. The Dictionary of American Naval Fighting Ships Rockford article states that Rockford was named EK-20 in Soviet service and NavSource Online: Frigate Photo Archive Rockford (PF 48) ex-PG-156 repeats this, but Russell, Richard A., Project Hula: Secret Soviet-American Cooperation in the War Against Japan, Washington, D.C.: Naval Historical Center, 1997, ISBN 0-945274-35-1, p. 39, which includes access to Soviet-era records unavailable during the Cold War, reports that the ship's Soviet name was EK-18. As sources, Russell cites Department of the Navy, Ships Data: U.S. Naval Vessels Volume II, 1 January 1949, (NAVSHIPS 250-012), Washington, DC: Bureau of Ships, 1949; and Berezhnoi, S. S., Flot SSSR: Korabli i suda lendliza: Spravochnik ("The Soviet Navy: Lend-Lease Ships and Vessels: A Reference"), St. Petersburg, Russia: Belen, 1994.
4. According to Russell, Richard A., Project Hula: Secret Soviet-American Cooperation in the War Against Japan, Washington, D.C.: Naval Historical Center, 1997, ISBN 0-945274-35-1, which includes access to Soviet-era records unavailable during the Cold War, Project Hula ships were commissioned into the Soviet Navy simultaneously with their transfer from the U.S. Navy; see photo captions on p. 24 regarding the transfers of various large infantry landing craft (LCI(L)s) and information on p. 27 about the transfer of USS Coronado (PF-38), which Russell says typified the transfer process. As sources, Russell cites Department of the Navy, Ships Data: U.S. Naval Vessels Volume II, 1 January 1949, (NAVSHIPS 250-012), Washington, DC: Bureau of Ships, 1949; and Berezhnoi, S. S., Flot SSSR: Korabli i suda lendliza: Spravochnik ("The Soviet Navy: Lend-Lease Ships and Vessels: A Reference"), St. Petersburg, Russia: Belen, 1994.
5. Russell, Richard A., Project Hula: Secret Soviet-American Cooperation in the War Against Japan, Washington, D.C.: Naval Historical Center, 1997, ISBN 0-945274-35-1, p. 39.
6. Russell, Richard A., Project Hula: Secret Soviet-American Cooperation in the War Against Japan, Washington, D.C.: Naval Historical Center, 1997, ISBN 0-945274-35-1, pp. 37–38, 39.
7. NavSource Online: Patrol Frigate Photo Archive: Rockford (PF-48) ex-PG-156
8. United States Navy Naval History and Heritage Command Korean War: Chronology of U.S. Pacific Fleet Operations, May 1952

External links

• Photo gallery of USS Rockford at NavSource Naval History
• hazegray.org: USS Rockford