NATO and national naval posture in the Baltic after Finland and Sweden, 2024-2026

NATO launched Baltic Sentry on 14 January 2025 at a Helsinki summit of Baltic Sea allies, adding frigates, maritime patrol aircraft and "a small fleet of naval drones" to the region, alongside integration of allies' own national surveillance assets. It sits on top of infrastructure NATO had already built since the 2022 Nord Stream sabotage: a Critical Undersea Infrastructure Coordination Cell (2023), a NATO-EU resilience task force (2023), and a dedicated Maritime Centre for the Security of Critical Undersea Infrastructure inside Allied Maritime Command (MARCOM) from May 2024.

Command runs through two related but distinct layers. Baltic Sentry, the activity, is led by Allied Joint Force Command Brunssum (JFC Brunssum), with MARCOM playing "a central role" in the maritime domain, under the Supreme Allied Commander Europe (SACEUR). Separately, Commander Task Force Baltic (CTF Baltic) — a standing, two-star multinational headquarters activated 1 October 2024 at German Navy Headquarters in Rostock — sits under MARCOM's operational control (OPCON) and plans exercises while leading NATO-assigned naval forces "in peace, crisis and war." As of late 2025 it was commanded by a German rear admiral with a Polish deputy, a Swedish chief of staff and a Danish assistant chief of staff for operations.

CTF Baltic is the coordination point rather than the sole force generator: the core surface presence for Baltic Sentry is drawn from Standing NATO Maritime Group 1 (SNMG1) and Standing NATO Mine Countermeasures Group 1 (SNMCMG1) — a Dutch frigate, a German minehunter, a Dutch survey vessel, for example. No source opened in this run states explicitly how CTF Baltic's day-to-day coordination and JFC Brunssum's lead of Baltic Sentry connect operationally; this bundle records that as an open structural question rather than guessing at it.

Baltic Sentry also draws on the UK-led Joint Expeditionary Force (JEF) for tracking suspect vessels. The JEF itself is pushing toward deeper integration: on 23 April 2026 the UK's First Sea Lord hosted JEF chiefs of navy in Whitehall to discuss moving "beyond coalition activity towards a permanent joint force," floating a future built around common platforms such as the Type 26 frigate already exported to Norway and Canada. In practice this shows up as rotational patrols: four Royal Navy P2000 patrol boats spent two months in Latvian, Estonian, Finnish and Swedish waters in Exercise Tarassis, the JEF's largest operation to date, focused on port and coastal protection against fast-attack threats.

Northern Coasts 2025 (NOCO 25) ran roughly two weeks to 14 September 2025, with about 8,400 personnel and 40 units from 14 nations under German lead; CTF Baltic's own commander, Rear Admiral Stephan Haisch, used it to frame the goal as testing "realistic threat scenarios from all dimensions: air, land, water and cyber." Finland's Freezing Winds 25 followed in the archipelago and Gulf of Finland from 24 November to 4 December 2025, with roughly 5,000 personnel and 20 vessels focused explicitly on securing maritime connections and critical infrastructure, including US Marines rotating through as Marine Rotational Force-Europe. BALTOPS 26, the 55th iteration of the region's flagship exercise, sailed from Gdynia in June 2026 and — reportedly for the first time since 1972 — was commanded from JFC Brunssum to rehearse real wartime command relationships rather than a standalone exercise structure.

Poland picked Saab's A26 Blekinge-class design for its Orka programme on 26 November 2025, beating bids from Germany's TKMS, France's Naval Group, Italy's Fincantieri, Spain's Navantia and South Korea's Hanwha Ocean. At announcement, the programme was pegged at roughly PLN10 billion (~$2.7bn) — and analysts already expected it to cost more. It did: the firm contract signed 29 June 2026 in Gdynia was worth approximately SEK47 billion, covering three A26 boats, a weapons package, a training/support package, and MRO capability built up in Poland with Saab and PGZ. Final deliveries run to 2038.

That gap is not unusual here. It is the same pattern this run finds in the Miecznik frigate programme's own cost growth and, most starkly, across the twenty-two-year history of Sweden's own A26 boats: ordered in 2015 for SEK8.4bn with delivery pencilled in for 2022-2024; renegotiated in 2021 to SEK14bn (SEK17.1bn adjusted) with delivery pushed to 2027-2028; renegotiated again in October 2025 to a cumulative SEK25bn (~EUR2.3bn), with the two boats now due in 2031 and 2033 — first delivery has effectively slipped about nine years from what was promised at signature. Naval News attributes this chiefly to the depleted state of the Kockums yard, which had not built a new submarine hull since the mid-1990s Gotland class, rather than to the A26 design itself. Poland's own Orka timeline moved too: at the November 2025 selection stage, Warsaw was targeting a 2030 first delivery with a separate 2027 interim 'gap-filler' boat — a plan superseded by the June 2026 contract's actual bridging arrangement (the 2028 Södermanland lease, below).

Bridging the gap between Poland's old and new fleets is itself a small diplomatic package: Sweden will lease its own submarine, HMS Södermanland, to Poland from 2028, after roughly 18 months of Polish crew training at Sweden's 1st Submarine Flotilla in Karlskrona starting right after summer 2026. Both the submarine order and the lease were folded into a new Baltic Sea Pact the two countries launched on 29 June 2026 in Gdynia, covering security/defence policy, military cooperation and defence-industrial cooperation.

Read that chart as a warning label. Every point except the last is a promise made at contract signature or a later renegotiation — not a delivery that happened. Sweden's A26 line moves right three times across a decade. Germany's F126 line moved right once, in 2025, and then simply stopped: the programme was cancelled in June 2026 with zero hulls delivered (see below). Only Miecznik's 2031 point represents a programme still (as of September 2026) on its original post-amendment schedule.

Poland's Miecznik frigate contract was signed in 2021 between the state Armament Agency and a PGZ-led consortium including UK's Babcock, using Babcock's Arrowhead 140 design, at an initial value of roughly PLN8 billion. Babcock's own role — formalised in a 7 September 2022 Class Design Contract and a Transfer of Knowledge and Technology (TOKAT) framework — is platform design and technology transfer to PGZ S.A., PGZ SW and Remontowa Shipbuilding, not construction itself. By the end of 2023, cost amendments had already pushed the programme's stated value to roughly PLN15 billion (~EUR3.5bn) — an 88% increase before a single hull had even launched.

The first frigate, ORP Wicher, launched at Gdynia on 12 August 2026. The second hull (Burza) began construction in May 2025 and the third (Huragan) in April 2026; the whole three-ship programme — intended to replace Poland's two 1970s-era ex-US Oliver Hazard Perry-class frigates — is scheduled to finish by the end of 2031.

Germany supplies this run's starkest cautionary case. In 2020 Berlin contracted Dutch yard Damen (DSNS) for six F126 anti-submarine frigates at roughly EUR10 billion, with a first-unit target of 2028. By 2025 that had drifted to 2032. On 24 June 2026 the defence ministry killed the programme outright: Damen could not hold schedule or budget, and a review found switching general contractor to Lürssen too costly and legally fraught. Continuing F126 in any form was assessed at over EUR18 billion — nearly double the signature price — for a programme that, six years in, had delivered nothing.

Germany's replacement plan is up to eight MEKO A-200 DEU frigates from TKMS: four firm for about EUR6.3 billion, with an option on four more (open until end-2026) for about EUR5.3 billion. The Navy's Inspector, Vice Admiral Jan Christian Kaack, put the logic bluntly: "We need steel in the water, fast and specifically specialised for the anti-submarine-hunting capability." Meanwhile Germany's second batch of five K130 corvettes (Köln, Emden, Karlsruhe, Augsburg, Lübeck) — contracted in 2017 to NVL/TKMS/German Naval Yards Kiel for about EUR2bn, replacing 1980s Gepard-class fast attack craft — remains on a 2027 delivery target; Augsburg was christened in May 2025.

Finland's four-ship Pohjanmaa-class programme (Squadron 2020), built by Rauma Marine Constructions to replace seven ageing vessels, is running closer to plan: hull 1 launched May 2025, hull 2 launched almost exactly a year later on 21 May 2026, and hulls 3 and 4 both had construction/steel-cutting milestones on 14 January 2026 — meaning all four were simultaneously under construction by mid-2026. The Finnish Navy expects staged delivery across 2027-2029.

Sweden is also mid-life-upgrading, not just building new: a SEK1.6bn May 2025 Saab contract adds nine-cell vertical-launch CAMM air-defence missiles (~25km range) plus upgraded RBS15 Mk4 anti-ship missiles and Tp47 torpedoes to all five Visby-class corvettes, with MBDA and Lockheed Martin as partners; physical work began in July 2026 on the first ship, HMS Härnösand. (A much smaller SEK190m Saab contract from January 2021 covered only preliminary Visby MLU/next-generation-corvette definition work — a distinct, earlier step that this run flags explicitly to avoid conflating it with the 2025 main-upgrade contract above.)

World military spending hit $2,887 billion in 2025 (+2.9% real), SIPRI's eleventh straight year of increases, with the global military burden at 2.5% of GDP, its highest since 2009. The 29 European NATO members spent a combined $559 billion, and 22 of them cleared 2.0% of GDP; Germany was the group's biggest spender at $114bn (+24%), crossing 2.0% of GDP for the first time since 1990, at 2.3%. Across the water, the state that owns the Baltic Fleet kept pace: Russia's own military spending grew 5.9% in 2025 to $190bn (7.5% of GDP), while Ukraine's rose 20% to $84.1bn (about 40% of GDP). NATO's own Secretary General's Annual Report (26 March 2026) put the 2025 increase for European Allies and Canada at 20% versus 2024 and said that, for the first time, every Ally met or exceeded the 2014-set 2% target.

This all sits under NATO's Hague Summit pledge (24-25 June 2025): Allies committed to 5% of GDP by 2035, split into 3.5% on core defence/Capability Targets and up to 1.5% on resilience items including critical infrastructure — reviewed in 2029. Notably, the Hague Declaration's text contains no Baltic-Sea-specific or undersea-infrastructure-specific line; the 1.5% category is written generically enough to cover it, but doesn't name it. (News coverage at the time described a separate Spanish opt-out from the 5% figure, but the Declaration's own text, as opened for this bundle, names no national exemption, so that detail is not asserted here.)

Estonia, Latvia and Lithuania all face the same problem — small, ageing mine-countermeasures and patrol fleets — and are being pitched two different-generation solutions at once. Naval Group has been offering its City-class MCM mothership (82m, 2,800 tonnes, carrying autonomous mine-warfare drones) to all three states plus Finland since May 2025, as a replacement for their much smaller 600-tonne Tripartite-class minehunters. Barely three days before this research run, on 7 September 2026, Saab unveiled a rival concept, the 66m MCMV 24, specifically pitched at the same three Baltic states (with early interest from Denmark and Germany too). A joint procurement of multipurpose corvettes among the three Baltic states is also floated under a "Naval Vision 2030+" plan, though this run could only confirm — from a paywalled source — that a Latvian Tripartite replacement is "one of only two naval programmes currently forecast" for the trio; funding and timeline detail were not visible.

Estonia's own navy is getting two new Baltic Workboats-built force-protection patrol vessels in 2027 at roughly EUR10m each (20m, shallow-draft), with the second hull's keel laid in April 2026. Lithuania, meanwhile, unveiled a conceptual design for its own larger Perkūnas ("Thunder")-class patrol ship in January 2025 — 88m, 30-60 crew, an 18-knot-plus 6MW engine, a helicopter deck, and missions from critical-infrastructure protection to minelaying — developed with Danish firm OSK Design toward a 2030 target.

Denmark's April 2025 Navy Plan, part of a 2024-2033 defence framework, prioritises near-term items over new frigates: a seaborne surveillance vessel with underwater drones and sonar for critical-infrastructure monitoring, four marine-environment/mine-laying vessels doubling as military platforms, an autonomous-systems development programme, and 21 new Marine Home Guard vessels. Investment in frigates themselves starts with air-defence capability only; decisions on any larger future frigate buy are explicitly deferred to a later partial agreement.

The clearest reminder that naval posture and the shadow-fleet enforcement covered elsewhere in this collection are now the same story: on 12 August 2026, aboard the cruiser Varyag off Sakhalin, President Putin called European boardings of Russian tankers "piracy and banditry" and threatened Russia would respond "in kind... wherever we ourselves deem necessary and appropriate — anywhere." That geographic looseness matters for everything above it in this report: Baltic Sentry, CTF Baltic and JEF patrols are all built around a Baltic Sea contingency, but Moscow's own stated response calculus is explicitly not confined to it.

Three things stand out for anyone tracking money or delivery dates in this region. First, the gap between an "announced" figure and a signed contract is routinely 50-100%+ here (Orka, Miecznik), and the gap between a signed contract and an actual delivery can run a decade (Sweden's A26). Second, that risk is not hypothetical: Germany's F126 proves a multi-billion-euro, multi-year Baltic-facing programme can simply be cancelled with nothing delivered. Third, smaller Baltic states are being courted by rival vendors (Naval Group vs Saab on mine warfare) faster than their own joint-procurement plans (Naval Vision 2030+) appear to be funded — a mismatch worth watching into 2027.