USS Iowa (BB-61)

On 24 February 1943, Iowa put to sea for a shakedown in the Chesapeake Bay and along the Atlantic coast. She got underway on 27 August for Argentia, Newfoundland, to counter the threat of the German battleship Tirpitz which was reportedly operating in Norwegian waters, before returning to the United States on 25 October for two weeks of maintenance at the Norfolk Navy Yard.[5]

When Iowa was selected to ferry President Franklin D. Roosevelt to the Cairo and Tehran Conferences, she was outfitted with a bathtub for Roosevelt's convenience. Roosevelt, who had been paralyzed in 1921, would have been unable to make effective use of a shower facility.[6][5]

In November 1943, Iowa carried President Roosevelt, Secretary of State Cordell Hull, Chief of Staff Admiral William D. Leahy, Chief of Staff of the Army General George C. Marshall, Chief of Naval Operations Ernest King, Commanding General of the U.S. Army Air Forces Henry "Hap" Arnold, Harry Hopkins, and other military leaders to Mers El Kébir, Algeria, on the first leg of the journey to the Tehran Conference.[7] Among the vessels escorting Iowa on this trip was the destroyer William D. Porter which was involved in several mishaps, the most serious of which involved a torpedo drill which went awry when a torpedo from William D. Porter discharged from its tube and headed toward Iowa.[8] On being warned, Iowa turned hard to avoid being hit by the torpedo and the torpedo detonated in the ship's wake. Iowa was unhurt and trained her main guns on William D. Porter, concerned that the smaller ship may have been involved in some sort of assassination plot.

Iowa completed her presidential escort mission on 16 December by returning the President to the United States.[8] Roosevelt addressed the crew of Iowa prior to leaving by stating, "... from all I have seen and all I have heard, the Iowa is a 'happy ship,' and having served with the Navy for many years, I know—and you know—what that means." He also touched on the progress made at the conference before concluding his address with "... good luck, and remember that I am with you in spirit, each and every one of you."[9]

Iowa in the Pacific; Indiana can be seen in the distance

As flagship of Battleship Division 7 (BatDiv 7), Iowa departed the United States on 2 January 1944 for the Pacific Ocean, transiting the Panama Canal on 7 January in advance of her combat debut in the campaign for the Marshall Islands. From 29 January to 3 February, she supported carrier air strikes made by Rear Admiral Frederick C. Sherman's Task Group 58.3 (TG 58.3)[10] against Kwajalein and Eniwetok atolls. Her next assignment was to support air strikes against the major Japanese naval and logistics base at Truk, Caroline Islands. Iowa, in company with other ships, was detached from the support group on 16 February 1944 to conduct an anti-shipping sweep around Truk, with the objective of destroying enemy naval vessels escaping to the north. On 21 February, she was underway with the Fast Carrier Task Force (TF 58 or TF 38, depending on whether it was part of the 5th Fleet or 3rd Fleet) while it conducted the first strikes against Saipan, Tinian, Rota, and Guam in the Mariana Islands. During this action, Iowa, along with her sister New Jersey, sank the Japanese light cruiser Katori, the cruiser having escaped Truk the day before following Operation Hailstone, the US air attack on Truk.[5]

On 18 March 1944, Iowa, flying the flag of Vice Admiral Willis A. Lee (Commander Battleships, Pacific), joined in the bombardment of Mili Atoll in the Marshall Islands. Although struck by two Japanese 4.7 in (120 mm) projectiles, Iowa suffered negligible damage. She then rejoined TF 58 on 30 March, and supported air strikes against the Palau Islands and Woleai of the Carolines for several days.[3]

From 22–28 April, Iowa supported air raids on Hollandia (now known as Jayapura), Aitape, and Wake Islands to support Army forces on Aitape and at Tanahmerah and Humboldt Bays in New Guinea. She then joined the Task Force's second strike on Truk, on 29 and 30 April, and bombarded Japanese facilities on Ponape in the Carolines on 1 May.[3]

In the opening phases of the Mariana and Palau Islands campaign, Iowa protected the American carriers during air strikes on the islands of Saipan, Tinian, Guam, Rota, and Pagan Island on 12 June. Iowa was then detached to bombard enemy installations on Saipan and Tinian on 13–14 June, which resulted in the destruction of a Japanese ammunition dump. On 19 June, in an engagement known as the Battle of the Philippine Sea, Iowa, as part of the battle line of TF 58, helped repel four massive air raids launched by the Japanese Middle Fleet. This resulted in the almost complete destruction of Japanese carrier-based air-forces, with Iowa claiming the destruction of three enemy aircraft. Iowa then joined in the pursuit of the fleeing enemy fleet, shooting down one torpedo plane and assisting in splashing another.[3][5]

Throughout July, Iowa remained off the Marianas supporting air strikes on the Palaus and landings on Guam. After a month's rest, Iowa sailed from Eniwetok as part of the Third Fleet, and helped support the landings on Peleliu on 17 September. She then protected the carriers during air strikes against the Central Philippines to neutralize enemy air power for the long-awaited invasion of the Philippines. On 10 October, Iowa arrived off Okinawa for a series of air strikes on the Ryukyu Islands and Formosa. She then supported air strikes against Luzon on 18 October and continued this duty during General Douglas MacArthur's landing on Leyte on 20 October.[3]

In a last-ditch attempt to halt the United States campaign to recapture the Philippines, the Imperial Japanese Navy struck back with Shō-Gō 1, a three-pronged attack aimed at the destruction of American amphibious forces in Leyte Gulf. The plan called for Vice-Admiral Jisaburō Ozawa to use the surviving Japanese carriers as bait to draw US carriers of TF 38 away from the Philippine beachheads, allowing Imperial Japanese Admirals Takeo Kurita, Kiyohide Shima, and Shōji Nishimura to take surface task forces through the San Bernardino Strait and Surigao Strait, where they would rendezvous and attack the US beachheads.[11][12] Iowa accompanied TF 38 during attacks against the Japanese Central Force under the command of Admiral Kurita as it steamed through the Sibuyan Sea toward San Bernardino Strait. The reported results of these attacks and the apparent retreat of the Japanese Central Force led Admiral William "Bull" Halsey to believe that this force had been ruined as an effective fighting group; as a result, Iowa, with TF 38, steamed after the Japanese Northern Force off Cape Engaño, Luzon. On 25 October 1944, when the ships of the Northern Force were almost within range of Iowa's guns, word arrived that the Japanese Central Force was attacking a group of American escort carriers off Samar. This threat to the American beachheads forced TF 38 to reverse course and steam to support the vulnerable escort carrier fleet, but fierce resistance by the 7th Fleet in the Battle off Samar had already caused the Japanese to retire and Iowa was denied a surface action. Following the Battle of Leyte Gulf, Iowa remained in the waters off the Philippines screening carriers during strikes against Luzon and Formosa. She sailed for the West Coast late in December 1944.[3]

USS ABSD-2 repairing the USS Iowa in early 1945 at Manus, Admiralty Islands

Iowa in drydock in San Francisco, undergoing repairs and modernization after being damaged during Typhoon Cobra

On 18 December, the ships of TF 38 unexpectedly found themselves in a fight for their lives when Typhoon Cobra overtook the force—seven fleet carriers, six light carriers, eight battleships, 15 cruisers, and about 50 destroyers—during their attempt to refuel at sea. At the time, the ships were operating about 300 mi (480 km) east of Luzon in the Philippine Sea.[13] The carriers had just completed three days of heavy raids against Japanese airfields, suppressing enemy aircraft during the American amphibious operations against Mindoro in the Philippines. The task force rendezvoused with Captain Jasper T. Acuff and his fueling group on 17 December with the intention of refueling all ships in the task force and replacing lost aircraft.[14] Although the sea had been growing rougher all day, the nearby cyclonic disturbance gave relatively little warning of its approach. On 18 December, the small but violent typhoon overtook the task force while many of the ships were attempting to refuel. Many of the vessels were caught near the center of the storm and buffeted by extreme seas and hurricane-force winds. Three destroyers—Hull, Monaghan, and Spence—capsized and sank with nearly all hands, while a cruiser, five aircraft carriers, and three destroyers suffered serious damage.[13] Approximately 790 officers and men were lost or killed, with another 80 injured. Fires occurred in three carriers when planes broke loose in their hangars, and some 146 planes on various ships were swept overboard or damaged beyond economical repair by fires or impacts.[14] Iowa reported zero injured sailors as a result of the typhoon,[15] but suffered a loss of one of her float planes, and damage to one of her shafts.[5][14] The damaged shaft required Iowa to return to the US, and she arrived at San Francisco on 15 January 1945, for repairs. During the course of the overhaul Iowa had her bridge area enclosed, and was outfitted with new search radars and fire-control systems.[5]

Missouri (left) transfers personnel to Iowa in advance of the surrender ceremony planned for 2 September.

Iowa sailed on 19 March 1945 for Okinawa, arriving on 15 April to relieve her sister ship New Jersey. From 24 April, Iowa supported carrier operations which aimed to establish and maintain air superiority for ground forces during their struggle for the island. She then supported air strikes off southern Kyūshū from 25 May to 13 June. Afterward, she sailed toward northern Honshū and Hokkaidō, and participated in strikes on the Japanese home islands on 14–15 July by bombarding Muroran, Hokkaidō, destroying steel mills and other targets. The city of Hitachi on Honshū was shelled beginning the night of 17 July and lasting to 18 July. On 29 and 30 July, Iowa trained her guns on Kahoolawe for a bombardment and continued to support fast carrier strikes until the cessation of hostilities on 15 August.

On 27 August, Iowa and her sister ship Missouri entered Sagami Bay to oversee the surrender of the Yokosuka Naval Arsenal.[3][5] Two days later, she entered Tokyo Bay with the occupation forces. Here, a number of sailors from Missouri were temporarily stationed on Iowa for the duration of the surrender ceremony which took place aboard Missouri.[16] After serving as Admiral Halsey's flagship for the surrender ceremony on 2 September, Iowa remained in the bay as part of the occupying force. As part of the ongoing Operation Magic Carpet, she received homeward bound GIs and liberated US prisoners of war before departing Tokyo Bay on 20 September, bound for the United States.[3][5]

Iowa embarked midshipmen for at-sea training to Northern Europe in July 1953, and shortly afterwards took part in Operation Mariner, a major NATO exercise, serving as flagship of Vice Admiral Edmund T. Wooldridge, commander of the 2nd Fleet. Upon completion of this exercise, Iowa operated in the Virginia Capes area. Later, in September 1954, she became the flagship of Rear Admiral R. E. Libby, Commander, Battleship Cruiser Force, United States Atlantic Fleet.[3]

From January–April 1955, Iowa made an extended cruise to the Mediterranean Sea as the flagship of the Commander, 6th Fleet. She departed on a midshipman training cruise on 1 June, and upon her return entered Norfolk for a four-month overhaul. Afterward, Iowa continued intermittent training cruises and operational exercises, until 4 January 1957 when she departed Norfolk for duty with the 6th Fleet in the Mediterranean. Upon completion, Iowa embarked midshipmen for a South American training cruise and joined in the International Naval Review off Hampton Roads, Virginia on 13 June.[3]

USS Iowa laid up alongside USS Wisconsin and USS Shangri-La in Philadelphia, July 8, 1978

On 3 September, Iowa sailed for Scotland for NATO's Exercise Strikeback. She returned to Norfolk on 28 September, and departed Hampton Roads for the Philadelphia Naval Shipyard on 22 October. She was decommissioned on 24 February 1958 and entered the Atlantic Reserve Fleet at Philadelphia.[3]

From April to August 1984, Iowa underwent refresher training and naval gunfire support qualifications at Guantanamo Bay, Cuba and the Puerto Rican Operating area. After a short period in her new home port of Norfolk, VA she spent the two periods of time during the rest of 1984 and early 1985 conduction "presence" operations shakedown in the area around Central America. During this time she transitted the Panama Canal to operate off the west coast of Central America while also conducting people-to-people humanitarian operations, including in El Salvador, Costa Rica and Honduras,[5][26] before returning to the United States in April 1985 for a period of routine maintenance.[5]

Iowa fires a full broadside of nine 16-inch (406 mm)/50-caliber and six 5-inch (127 mm)/38 cal guns during a target exercise near Vieques Island, Puerto Rico, on 1 July 1984. Shock waves are visible in the water.

In August 1985, Iowa joined 160 other ships for Exercise Ocean Safari, a NATO naval exercise aimed at testing NATO's ability to control sea lanes and maintain free passage of shipping. Owing to bad weather, Iowa and the other ships were forced to ride out rough seas, but Iowa made use of the time to practice hiding herself from enemy forces. While serving with the exercise force, Iowa crossed the Arctic Circle.[27] In October, she took part in Baltic operations, and fired her phalanx guns, 5 in (127 mm) guns, and 16 in (406 mm) guns in the Baltic Sea on 17 October while operating with US and other allied ships.[28] After these operations during which she visited LeHavre in France, Kiel in Germany, Copenhagen (where the current Crown Prince of Denmark visited the ship as a schoolboy) and Aarhus in Denmark, and Oslo in Norway where the King of Norway was entertained at lunch, she returned to the United States.[5]

Beginning on 17 March 1986, Iowa underwent her overdue InSurv inspection. The inspection, which Iowa ultimately failed, was conducted under the supervision of Rear Admiral John D. Bulkeley. Bulkeley found that the ship was unable to achieve her top speed of 33 kn (38 mph; 61 km/h) during a full-power engine run, and recommended to the Chief of Naval Operations and Lehman that Iowa be taken out of service immediately. Rejecting this advice, Lehman instead instructed the leaders of the Atlantic Fleet to ensure that Iowa's deficiencies were corrected.[29]

Afterward, Iowa returned to the waters around Central America and conducted drills and exercises while providing a military presence to friendly nations. On 4 July, President Ronald Reagan and First Lady Nancy Reagan boarded Iowa for the International Naval Review, which was held in the Hudson River.[30] On 25 April, Captain Larry Ray Seaquist assumed command of the battleship and her crew during Naval Gunfire Support requalification off Vieques Island near Puerto Rico.[5][31]

On 17 August, Iowa set sail for the North Atlantic, and in September she participated in Exercise Northern Wedding by ferrying Marines ashore and assisting helicopter gunships. During the exercise Iowa fired her main guns at Cape Wrath range in Scotland in support of a simulated amphibious assault on 5–6 September, firing a total of 19 16-inch (406 mm) shells and 32 5-inch (127 mm) shells during a 10-hour period and operating in rough seas. During the live fire exercise, a small number of Iowa marines were put ashore to monitor the fall of shot and advise the battleship of gunnery corrections.[32] Afterward, Iowa visited ports, including Portsmouth, in England and Germany before returning to the United States in October.

Crewmen recover an RQ-2 Pioneer unmanned aerial vehicle aboard Iowa.

In December, the ship became the test bed for the Navy's RQ-2 Pioneer Unmanned Aerial Vehicle (UAV). The drone was designed to serve as an aerial spotter for the battleship's guns, thereby allowing the guns to be used against an enemy without the need for an airplane or helicopter spotter. Pioneer passed its tests and made its first deployment that same month aboard Iowa.[24]

Iowa conducting an underway replenishment with USS Midway in the Persian Gulf in December 1987

From January–September 1987 Iowa operated in the waters in and around Central America and participated in several exercises until sailing for the Mediterranean Sea on 10 September to join the 6th Fleet based there. She remained in the Mediterranean until 22 October, when she was detached from the 6th Fleet and departed for operations in the North Sea. On 25 November, as part of Operation Earnest Will, Iowa transited the Suez Canal and set sail for the Persian Gulf, which at the time was one of the battlefields of the first Gulf War (also referred to as the Iran–Iraq War).[5] The presence of US naval vessels in the gulf was in response to a formal petition from Kuwait,[33] whose ships were being raided by Iranian forces who were attempting to cut off weapons shipments from the United States and Europe to Saddam Hussein's regime in Iraq, via Kuwaiti territory. This phase of the war would later be called the "Tanker War" phase of the Iran–Iraq War.[34] Iowa and other vessels operating in the gulf were assigned to escort Kuwaiti tankers from Kuwaiti ports to the open sea, but because US law forbade military escorts for civilian ships flying a foreign flag, the tankers escorted by the United States were reflagged as US merchant vessels and assigned American names.[34] For the remainder of the year Iowa escorted Kuwaiti gas and oil tankers reflagged as US merchant ships from the Persian Gulf through the Strait of Hormuz.[5]

On 20 February 1988, Iowa departed from the Persian Gulf, transited the Suez Canal, and set sail for the United States, arriving at Norfolk on 10 March for routine maintenance. In April, she participated in the annual Fleet Week celebrations before returning to Norfolk for an overhaul. On 26 May, Fred Moosally replaced Larry Seaquist as Captain of Iowa.[35] After the overhaul, Moosally took Iowa on a shakedown cruise around Chesapeake Bay on 25 August. Encountering difficulty in conning the ship through shallow water, Moosally narrowly missed colliding with the frigate Moinester, destroyer Farragut, and the cruiser South Carolina before running aground in soft mud outside the bay's main ship channel near the Thimble Shoals. After one hour, Iowa was able to extricate herself without damage and return to port.[36] Iowa continued with sea trials throughout August and September, then began refresher training in the waters around Florida and Puerto Rico in October, during which the ship passed an Operation Propulsion Program Evaluation.[5][37]

On 20 January 1989, during an improperly authorized gunnery experiment off Vieques Island, Iowa fired a 16-inch (406 mm) shell 23.4 nmi (26.9 mi; 43.3 km), setting a record for the longest-ranged 16 in (406 mm) shell ever fired. In February, the battleship sailed for New Orleans for a port visit before departing for Norfolk. On 10 April, the battleship was visited by the commander of the 2nd Fleet, and on 13 April she sailed to participate in a fleet exercise.[5][38]

Heavy smoke pours from Turret Two following an internal explosion on 19 April 1989.

During a gunnery exercise, at 0955[39] on 19 April 1989, an explosion ripped through the Number Two 16-inch (406 mm) gun turret, killing 47 crewmen. A gunner's mate in the powder magazine room quickly flooded the No. 2 powder magazine, likely preventing catastrophic damage to the ship.[40] At first, Naval Investigative Service (N.I.S., later renamed Naval Criminal Investigative Service or NCIS) investigators theorized that one of the dead crewmen, Clayton Hartwig, had detonated an explosive device in a suicide attempt after the end of an alleged affair with another sailor.[40][41] To support this claim, naval officials pointed to several different factors, including Hartwig's life insurance policy, which named Kendall Truitt as the sole beneficiary in the event of his death,[42] the presence of unexplained materials inside Turret II,[43] and his mental state, which was alleged to be unstable.[44][45]

Although the Navy was satisfied with the investigation and its results,[41] others were unconvinced,[44] and in October 1991, amid increasing criticism, Congress forced the Navy to reopen the investigation.[40] This second investigation, handled by independent investigators, was hampered as most of the original debris from Iowa had been cleaned up or otherwise disposed of by the Navy before and after the first investigation,[41][42][46] but it did uncover evidence pointing to an accidental powder explosion rather than an intentional act of sabotage.[40][45][47]

While Iowa was undergoing modernization in the early 1980s, her sister ship New Jersey had been dispatched to Lebanon to provide offshore fire support.[48] At the time, New Jersey was the only commissioned battleship anywhere in the world, and it was found that, in an effort to get another battleship commissioned to relieve New Jersey, the modernization of Iowa was stepped up, leaving her in poor condition when she recommissioned in 1984.[42] It was also determined that Captain Fred Moosally was more concerned with the maintenance of the missiles than the training and manning of guns.[49]

Powder from the same lot as the one under investigation was tested at the Naval Surface Warfare Center Dahlgren Division. Spontaneous combustion was achieved with the powder, which had been originally milled in the 1930s and improperly stored in a barge at the Navy's Yorktown, Virginia Naval Weapons Station during a 1988 dry-docking of Iowa.[40][41][42][45] As it degrades, gunpowder gives off ether gas, which is highly flammable and could be ignited by a spark. This revelation resulted in a shift in the Navy's position on the incident, and Admiral Frank Kelso, the Chief of Naval Operations at the time, publicly apologized to the Hartwig family, concluding that there was no real evidence to support the claim that he had intentionally killed the other sailors.[40][42][45][50] Iowa captain Fred Moosally was severely criticized for his handling of the matter, and as a result of the incident the Navy changed the powder-handling procedures for its battleships.[47] The incident remains one of the surface Navy's worst losses of life during peacetime operations.[51]