Sierra

E1990723 UNEXPLORED

Sierra is the NATO reporting name for a class of advanced Russian nuclear-powered attack submarines known for their titanium hulls and deep-diving capabilities.

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All labels observed (1)

Label	Occurrences
Sierra canonical	1

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

Sierra-class submarine → NATOReportingName → Sierra ⓘ