USS Iowa Turret Explosion
The USS Iowa turret explosion occurred in the Number Two 16-inch gun turret of the United States Navy battleship USS Iowa (BB-61) on 19 April 1989. The explosion in the center gun room killed 47 of the turret's crewmen and severely damaged the gun turret itself. Two major investigations were undertaken, one by the Navy and then one by the General Accounting Office (GAO) and Sandia National Laboratories. The investigations produced conflicting conclusions.
The first investigation into the explosion, conducted by the US Navy, concluded that one of the gun turret crew members, Clayton Hartwig, who died in the explosion, had deliberately caused it. During the investigation, numerous leaks to the media, later attributed to Navy officers and investigators, implied that Hartwig and another sailor, Kendall Truitt, had engaged in a homosexual relationship and that Hartwig had caused the explosion after their relationship had soured. In its report, however, the Navy concluded that the evidence did not show that Hartwig was homosexual but that he was suicidal and had caused the explosion with either an electronic or chemical detonator.
The victims' families, the media, and members of Congress were sharply critical of the Navy's findings. The Senate and House Armed Services Committees both held hearings to inquire into the Navy's investigation and later released reports disputing the Navy's conclusions. The Senate committee asked the GAO to review the Navy's investigation. To assist the GAO, Sandia National Laboratories provided a team of scientists to review the Navy's technical investigation.
During its review, Sandia determined that a significant overram of the powder bags into the gun had occurred as it was being loaded and that the overram could have caused the explosion. A subsequent test by the Navy of the overram scenario confirmed that an overram could have caused an explosion in the gun breech. Sandia's technicians also found that the physical evidence did not support the Navy's theory that an electronic or chemical detonator had been used to initiate the explosion.
In response to the new findings, the Navy, with Sandia's assistance, reopened the investigation. In August 1991, Sandia and the GAO completed their reports, concluding that the explosion was likely caused by an accidental overram of powder bags into the breech of the 16-inch gun. The Navy, however, disagreed with Sandia's opinion and concluded that the cause of the explosion could not be determined. The Navy expressed regret to Hartwig's family and closed its investigation.
Read more about USS Iowa Turret Explosion: Explosion, Immediate Aftermath
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