India Almost Sank Its Own $2.9 Billion Submarine by Leaving a Hatch Open

Water “rushed in as a hatch on the rear side was left open by mistake while [the Arihant] was at harbor” in February 2017, shortly after the submarine’s launch, The Hindu reports. The modern submarine is not a simple machine. A loss of propulsion, unexpected flooding, or trouble with reactors or weapons can doom a sub crew to a watery grave.Also, it’s a good idea to, like, close the hatches before you dive.(This article originally appeared at Task & Purpose. Follow Task & Purpose on Twitter. This article first appeared in 2018.)Call it a lesson learned for the Indian navy, which managed to put the country’s first nuclear-missile submarine, the $2.9 billion INS Arihant, out of commission in the most boneheaded way possible.The Hindu reported yesterday that the Arihant has been out of commission since suffering “major damage” some 10 months ago, due to what a navy source characterized as a “human error” — to wit: allowing water to flood to sub’s propulsion compartment after failing to secure one of the vessel’s external hatches.

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