Navy Inshore Undersea Warfare Group Two (IUWG-2)

• Origins in the Cold War: Navy Inshore Undersea Warfare Group Two (IUWG-2) traces its origins back to the Cold War era, established to counter potential threats to U.S. naval installations from underwater saboteurs and enemy divers. • Activated in 1972: IUWG-2 was formally activated in 1972 at Naval Amphibious Base Little Creek, Virginia, as part of the expanding coastal and harbor defense strategy of the U.S. Navy. • Harbor Defense Focus: The unit specialized in harbor defense, providing surveillance, detection, and interdiction capabilities against undersea threats in U.S. and allied harbors. • Reserve Force Backbone: IUWG-2 was predominantly staffed by U.S. Navy Reserve personnel, making it a critical component of the Navy’s mobilization and force augmentation plan. • Deployments Worldwide: IUWG-2 detachments deployed to various strategic ports and harbors overseas, including in Europe, the Middle East, and the Caribbean, during exercises and real-world contingencies. • Innovative Technology Use: The group made extensive use of then-cutting-edge sonar, radar, and underwater detection systems to identify and track potential underwater threats. • Role in Operation Desert Storm: IUWG-2 units were mobilized and played a key role in securing ports and naval facilities during Operation Desert Storm in 1990-1991. • Joint Operations: IUWG-2 frequently operated alongside other U.S. services and allied nations, fostering interoperability in port and harbor protection operations. • Transition and Legacy: In the early 2000s, IUWG-2’s mission was absorbed into the Maritime Expeditionary Security Force (MESF) as part of the Navy’s transformation, but its legacy of harbor defense continues. • Symbolic Crest: The unit’s crest featured a trident and sonar waves, symbolizing its dual focus on sea and undersea defense, as well as its vigilance against unseen threats to naval operations.