Submarines are what military analysts describe as a sea denial weapon because of their ability to play a role in deterring ships, in this case from coming close to the island. They are mobile and don’t need to spend much time in port to operate.
“These submarines are survivable platforms,” said Thomas Shugart, a former submarine officer and an adjunct senior fellow at the Center for a New American Security. “You can just send them to sea and say, ‘Hey, sink whatever stuff’s coming across the strait.’”
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