The USS Michigan, a nuclear submarine known for carrying special-ops teams, arrived in the South Korean city of Busan for what the Navy called a routine port visit last Friday, as tensions between the US and North Korea remain high.
The Michigan is an Ohio-class guided-missile submarine, one of four such US subs designated SSGNs.
In April, the last time the Michigan was in Busan, South Korean media reported it was carrying SEALs to train with South Korean forces to take out the North's nuclear command structure and leader Kim Jong Un, though the US military has said that it does not train for attempts at regime change.
The Michigan used to carry nuclear missiles but is now outfitted with Tomahawk precision-guided missiles.
Here's what it can do.
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The USS Michigan was launched on April 26, 1980, and commissioned on September 11, 1982.
Source: US Navy
It's 560 feet long and 42 feet wide. It also weighs 16,764 metric tons when surfaced and 18,750 metric tons when submerged.
Source: US Navy
Its S8G PWR nuclear reactor powers two geared turbines that push the sub through the water at 14 mph when surfaced and 23 mph when submerged.
Source: US Navy
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