Exercise Silent Wolverine

Exercise Silent Wolverine. It was a major multinational naval exercise conducted in September 1986, during the latter stages of the Cold War. The primary theater of operations was the strategically vital GIUK gap, a maritime chokepoint between Greenland, Iceland, and the United Kingdom. The exercise was designed to test and demonstrate NATO's advanced capabilities in detecting and tracking the latest generation of silent Soviet Navy submarines, particularly those of the Akula-class.

Background and purpose

The strategic impetus for Exercise Silent Wolverine stemmed from growing concern within The Pentagon and SHAPE over the qualitative leap in Soviet submarine technology. The introduction of the Akula-class submarine, which incorporated advanced quieting techniques derived from stolen Los Angeles-class designs, threatened to erode the United States Navy's traditional acoustic advantage. This period, following the Able Archer 83 crisis and during the tenure of Soviet General Secretary Mikhail Gorbachev, saw intense competition in undersea warfare. The exercise aimed to validate new SOSUS upgrades, tactical procedures for carrier battle groups, and the interoperability of ASW forces from key allied nations to maintain control of the North Atlantic sea lines of communication.

Planning and participants

Planning was coordinated by the Commander, Naval Striking and Support Forces NATO (STRIKFORNATO) in conjunction with the United States Sixth Fleet and Royal Navy headquarters at Northwood. The primary naval participants included the USS ''America'' carrier battle group, elements of the Royal Navy's HMS ''Invincible'' group, and the Royal Norwegian Navy. These surface forces were supported by long-range maritime patrol aircraft like the P-3 Orion and the nascent S-3 Viking, alongside United States Air Force assets operating from bases in Iceland and Scotland. The opposing "aggressor" force was composed of United States Navy Sturgeon-class and Los Angeles-class submarines simulating the acoustic signature and tactics of Soviet Victor III and Akula-class boats.

Execution and timeline

The exercise commenced in early September 1986, with forces deploying into the storm-prone waters of the Norwegian Sea and the eastern portion of the GIUK gap. The operational timeline was divided into distinct phases, beginning with wide-area surveillance using fixed SOSUS arrays and mobile SURTASS ships. This was followed by coordinated prosecution phases where carrier-based S-3 Viking aircraft and SH-60 Seahawk helicopters worked in concert with frigates and destroyers like the USS ''Kidd'' to localize and track the simulated threats. A key event involved a high-speed transit of the GIUK gap by the surface action group while under persistent simulated submarine threat, testing the integrated air and surface ASW screen.

Key capabilities demonstrated

Silent Wolverine successfully showcased several critical advancements in Anti-submarine warfare. It proved the effectiveness of the newly deployed Surveillance Towed Array Sensor System (SURTASS) and upgraded SOSUS networks in initial detection. The exercise highlighted the vital role of Light Airborne Multi-Purpose System (LAMPS) helicopters, primarily the SH-60 Seahawk, in providing the close-in barrier for high-value units. Furthermore, it validated complex multi-national command and control protocols between the Royal Navy, Royal Norwegian Navy, and United States Navy, ensuring seamless data-links and tactical communication. The performance of the S-3 Viking in the coordination role between airborne, surface, and fixed sensor data was also a focal point.

Aftermath and assessment

The after-action assessment by STRIKFORNATO and the United States Naval Institute was cautiously optimistic, concluding that NATO retained a marginal but effective edge in North Atlantic ASW. The data collected on simulated Akula-class acoustic profiles directly informed subsequent tactical development and sensor programming for the United States Navy. The lessons learned fed into subsequent major exercises like Ocean Safari and the planning for future platforms, including the Seawolf-class submarine. While demonstrating robust capability, the exercise also underscored the escalating challenge posed by Soviet quieting technology, a concern that would drive The Pentagon's research and development for the Virginia-class submarine and next-generation maritime patrol aircraft.