Exercise Northern Coasts

Exercise Northern Coasts
Name	Exercise Northern Coasts
Date	2023–2024
Location	Arctic Ocean, Barents Sea, Norwegian Sea
Participants	Norway, United Kingdom, United States, Canada, Denmark, Sweden, Finland, Germany, France, Netherlands, Poland
Type	Multinational maritime and littoral combined-arms exercise
Command structure	NATO Allied Joint Force Command Brunssum, Allied Maritime Command
Objective	Interoperability, anti-submarine warfare, amphibious operations, maritime domain awareness

Exercise Northern Coasts was a large-scale multinational maritime and littoral training series conducted in the Arctic and high North between 2023 and 2024. The exercise brought together NATO members and partner states in coordinated operations across the Barents Sea, Norwegian Sea, and adjacent Arctic littoral zones to rehearse anti-submarine warfare, amphibious landings, and integrated air-sea-ground interoperability. Strategic signaling to regional actors and enhancement of Allied Maritime Command readiness underpinned the drills alongside testing logistics through Arctic sea lanes near Svalbard, Jan Mayen, and the Norwegian mainland.

Background and Strategic Context

The exercise was situated amid heightened interest in Arctic access following shifts in strategic postures by Russian Federation, expanded patrols by the Russian Northern Fleet, and evolving security ties among NATO members. It coincided with increased resource exploration near the Barents Sea and intensified freedom-of-navigation operations by navies including the Royal Navy, United States Navy, and Royal Canadian Navy. Planners referenced precedents such as Exercise Trident Juncture, Cold Response, and historical operations in the region involving the Royal Norwegian Navy and Soviet Navy to shape scenario design and deployment concepts.

Participating Nations and Forces

Participants included core NATO members: Norway, United Kingdom, United States, Canada, Denmark, Germany, France, Netherlands, and Poland; Nordic partners Sweden and Finland also contributed forces. Contributing services encompassed the Royal Norwegian Air Force, United States Marine Corps, Royal Air Force, and maritime units from the French Navy and Deutsche Marine. Special units such as United States Navy SEALs-equivalents, Royal Marine Commandos, and Norwegian Forsvarets Spesialkommando elements augmented amphibious task groups and littoral reconnaissance teams.

Objectives and Scenario

Primary objectives targeted interoperability in anti-submarine warfare (ASW), joint command-and-control, amphibious assault, logistics over extended lines, and maritime domain awareness (MDA). The scenario simulated contested sea lines of communication after a fictitious escalation affecting northern NATO collective defense zones, drawing on crisis templates similar to Article 5 deliberations and previous contingency planning used by Allied Joint Force Command Brunssum and NATO Allied Land Command. Exercises included contested resupply, contested airspace, and gray-zone harassment mirroring patterns seen in incidents involving the Kola Peninsula and incidents in the Baltic Sea.

Order of Battle and Assets

Naval components featured frigates and destroyers from the Royal Navy, United States Navy Arleigh Burke-class destroyers, Fridtjof Nansen-class frigates of Norway, FREMM frigates from France and Italy-pattern assets contributed by partners, and corvettes from Poland and Netherlands. Subsurface forces included Los Angeles-class submarine equivalents, modern Ula-class submarine and Kilo-class-threat simulations. Air assets comprised maritime patrol aircraft such as the P-8A Poseidon, CP-140 Aurora, Norwegian P-3 Orion legacy platforms, carrier-borne aircraft from HMS Queen Elizabeth, and land-based fighters from Royal Norwegian Air Force squadrons. Amphibious lift and logistics were provided by USNS-type auxiliaries, Royal Fleet Auxiliary vessels, and Norwegian landing craft, with helicopter support from CH-53 and NH90 platforms.

Timeline and Major Phases

The campaign unfolded over several months in phased activities: an initial mobilization and maritime domain awareness phase; a concentrated ASW and convoy-protection phase; a littoral interdiction and amphibious readiness phase; and a culminating integrated joint assault and sustainment validation. Key events mirrored timelines of historical large-scale NATO exercises like Exercise Bold Monarch and Trident Juncture 2018, with staging from Bodø, Trondheim, Harstad, and forward logistics through ports at Tromsø and Kirkenes.

Training Activities and Tactics

Training encompassed coordinated ASW tactics including trilateration sonar tracking, cooperative ASW using P-8A Poseidon and frigate sensor fusion, and joint helicopter dipping sonar operations. Amphibious procedures exercised included over-the-horizon amphibious assault, littoral strike coordination with naval fire support, and combined arms integration with mechanized elements from Norwegian Army brigades and United States Marine Corps units. Electronic warfare scenarios tested emissions control and GRS-style jamming countermeasures, while cyber-red-team engagements involved military cyber units modeled on NATO Cooperative Cyber Defence Centre of Excellence practices. Search-and-rescue simulations drew on coordination models from the International Maritime Organization-informed SAR frameworks and national coast guard practices.

Outcomes, Assessments, and Lessons Learned

Assessments highlighted improved sensor fusion among participating navies and enhanced interoperability of command-and-control nodes akin to standards promulgated by NATO Standardization Office. Noted deficiencies included logistics strain over Arctic sea lanes, gaps in cold-weather sustainment training for some units, and challenges in persistent ASW coverage against quiet diesel-electric submarine profiles akin to Kilo-class signatures. Recommendations emphasized expanded Arctic pre-positioning similar to concepts pursued by United States Northern Command, sustained multinational ASW task groups, increased cold-weather expeditionary training by forces such as the Royal Marines and Finnish Defence Forces, and continued investment in maritime patrol assets like the P-8A Poseidon and Arctic-capable auxiliary ships. The exercise informed subsequent planning cycles and interoperability initiatives across participating defense institutions.

Category:Multinational military exercises