IUW GROUP 1 (IUWG-1)

Inshore Undersea Warfare Group 1 (IUWG-1) was a United States Navy command established to provide harbor defense and coastal surveillance operations, primarily during the Cold War era. Activated in the late 1960s, IUWG-1 played a key role in organizing, training, and equipping Inshore Undersea Warfare Units (IUWUs) tasked with protecting U.S. and allied ports from underwater threats such as enemy divers and small craft. The group deployed various sensor technologies and patrol craft to detect and deter hostile activities in naval harbors and anchorages worldwide. IUWG-1 remained active into the 21st century, adapting its mission as maritime security needs evolved before eventually being disestablished as the Navy restructured its force protection commands.