Home  /  Media Centre  /  News  /  2025  /  NATO wraps up Dynamic Mongoose 2025: Allies join forces in high-intensity anti-submarine warfare training

Reykjavík, Iceland - NATO's biggest and most demanding annual anti-submarine warfare (ASW) exercise, Dynamic Mongoose 2025, has officially come to an end. Hosted by the Icelandic Coast Guard and led by NATO Allied Maritime Command (MARCOM), the exercise was held in the challenging waters of Northern Atlantic, bringing together more than ten Allied nations for an intensive few weeks of training at sea. Submarines, frigates, helicopters, Maritime Patrol Aircraft, and coast guard vessels worked side by side in scenarios designed to push both crews and equipment to their limits.

Dynamic Mongoose 25 saw participating forces rotate between hunting and evading in complex undersea warfare scenarios, sharpening their skills and strengthening the bonds that make NATO a unified maritime force. The High North’s cold, rough seas and unpredictable environment provided a tough but realistic backdrop to the exercise.

Dynamic Mongoose is NATO's largest and most intensive annual anti-submarine warfare exercise in Northern European waters

Royal Netherlands Navy Commodore Arjen S. Warnaar, Commander of Standing NATO Maritime Group 1 (SNMG1), reflected on the importance of the event: “Dynamic Mongoose is NATO's largest and most intensive annual anti-submarine warfare exercise in Northern European waters. This year's version, Dynamic Mongoose 25, has come to an end. It was both a great success and a memorable experience. With over 10 countries participating—with submarines, frigates, support ships, helicopters, Maritime Patrol Aircraft, and coast guard vessels—we have truly shown we are stronger together.”