7 trends tracked about this subject — the full history, oldest to newest below.
The United States Navy is defining the capabilities for its future SSN(X) nuclear-powered attack submarine to function as a swift drone mothership.
The UK is leading a new Northern European naval alliance with Norway, Sweden and seven NATO allies to hunt Russian submarines across the North Atlantic, Arctic and Baltic seas, citing 'the most dangerous period' since the Cold War.
NATO allies are conducting unprecedented naval exercises near Iceland to counter Russian nuclear submarines without the participation of United States forces.
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Russia has deployed anti-drone netting over its nuclear ballistic missile submarines at a key Pacific base to defend against potential Ukrainian drone attacks.
BAE Systems secures a multi-billion pound UK submarine contract as leaders emphasize national security and job creation.
Canada is expected to name the winner of a high-stakes competition to build 12 new submarines this Monday.