New Carrier, Old Threat: The Navy Is Struggling to Counter Torpedos In 2019, a potentially revolutionary new torpedo-defense system installed on five American aircraft carriers had proven unsatisfactory and would be withdrawn from service. Here's What You Need to Remember: The ATT is, in fact, a spinoff of a program to develop cost-efficient high-speed miniature torpedoes called the Common Very Light Weight Torpedo. The Navy’s 2020 budget documents now suggest that the anti-torpedo torpedo may instead show up on U.S. submarines as an “Anti-Torpedo Torpedo Compact Rapid Attack Weapon” system for potential integration into the AN/BYG-1 weapons loading systems used by U.S. submarines, as first reported in detail by The Drive.