Task and Purpose
Here is what happened.
Open Hatch Nearly Sunk India's New $3 Billion Nuclear Missile Submarine
It isn't hard to sink a submarine, it would seem.
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.
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.