Own the Stack

Week 36  |  August 2026

Monday, 6 July 2026. Inside a single trading day, three of the largest names in European and American defence announced they were buying their way into the undersea domain. Thales moved on Exail. Lockheed Martin moved on Ultra Maritime. Fincantieri moved on four companies at once. Three announcements, hours apart, each one a bet that the future of maritime autonomy belongs to whoever owns the most of it.

Rewind four days. Kraken Robotics had just closed its C$615 million purchase of Covelya, the group that owns Sonardyne. Fast-forward two days from 6 July and the pattern looked less like coincidence and more like a stampede.

Then the part the coverage mostly missed.

In the same fortnight, a different set of companies was raising money to prove the opposite point. Kraken Technology Group, a British startup with no relation to the Canadian Kraken beyond the name (more on that headache shortly), closed US$175 million at a billion-dollar valuation on 9 July. The day before it was reported it had airdropped one of its uncrewed boats out of the back of an A400M transport aircraft. And the whole time, the US Navy was running a procurement experiment called the Golden Fleet marketplace, built on the explicit premise that it should never let a single prime own the stack at all.

Two theories of how autonomy scales. Both funded, both contracted, both demonstrated, inside the same two weeks. This piece is about which one capital is actually right about.

The consolidation wave and its counter-bets, across one fortnight.

Start with what these deals are not, because the trade-press framing gets it backwards.

Every acquirer described its purchase as buying capability. That reading falls apart the moment you look at what each company already made. Thales builds inertial navigation systems. So does Exail, and the two had already been picked together by the French procurement agency (DGA) to supply mine-hunting drones to the French Navy. Lockheed makes sonar. So does Ultra, and both have been selling into the same hulls for years. Kraken Robotics makes synthetic aperture sonar and subsea batteries. Sonardyne makes the acoustic positioning that tells those platforms where they are. Nobody in this wave bought a technology they couldn't have built themselves.

What was bought was structure. Production lines already certified. Supply chains already qualified. Order books already sitting inside a programme of record. Engineering teams that had already done the years of unglamorous integration work that turns a promising prototype into something a navy will actually field.

That distinction goes to the heart of what we have argued since inception. In maritime autonomy, the binding constraint has never been the technology. It has rarely even been the capital. It is industrial structure, and the certification and procurement machinery wrapped around it. These five deals are the clearest evidence yet that the primes agree. What they are buying is time.

Which sets up the only question worth asking about a wave like this. When you fold a fast-moving autonomy specialist into a defence prime, does the speed survive the absorption? Hold that thought. We come back to it, because it is where the whole bet is won or lost.

Here is what landed, and how each deal is structured.

Group them by the kind of bet each represents, because they are not all the same animal.

The sensor-house roll-up. Kraken Robotics, a Canadian company listed in Toronto, spent C$615 million to buy Covelya, parent of Sonardyne, EIVA, Voyis and Chelsea Technologies. Kraken already had the sonar and the subsea power. Now it has the acoustic navigation, the survey software and the optical sensing to go with it. CEO Greg Reid has been open that the goal is a single full-stack subsea intelligence house. The deal closed 2 July, after clearing its regulatory approvals in mid-June.

The European sovereignty play. Thales agreed to buy the Gorgé family's controlling stake in Exail at an enterprise value near €3.9 billion (a 44 per cent premium) then to tender for the rest. It beat Safran, which had been in exclusive talks days earlier at a lower price and walked. Exail is widely described as Europe's leading maker of mine-countermeasure robotics and the world's number-two player in naval inertial navigation (per Investing.com). For Thales, this is about owning the sovereign French capability chain from the sensor all the way to the vehicle. Patrice Caine pitched it around European technological sovereignty, which tells you exactly which audience the deal was written for.

The prime absorbing a specialist. Lockheed Martin agreed to pay US$3.45 billion for Ultra Maritime, carved out of the private-equity-owned Cobham Ultra. Ultra makes sonobuoys and torpedo-defence systems, and it folds directly into Lockheed's Rotary and Mission Systems division. This is the purest own-the-stack move of the five. As we'll see, it is also the one that will tell us the most about whether absorption slows a specialist down.

The state-backed champion, built from parts. Fincantieri, majority-owned by the Italian state investor, spent an initial €600 million (rising past a billion once a tender offer completes) to buy into four companies at once: Next Geosolutions, WSense, Graal Tech and Defcomm. It bolted them onto its existing torpedo, sonar and submarine units to create eight "centres of excellence" under one underwater division. One number is the tell. Fincantieri now expects that underwater business to hit revenue targets it had set for 2030, and to hit them four years early. This is a landgrab.

And the bolt-on. NORBIT of Norway paid around US$34 million for Water Linked, a small Trondheim maker of underwater positioning and sensing. Tiny beside the others. Included because it rhymes: even the mid-sized sensor players are being swept up.

One footnote for completeness. Stretch the window back to 1 March and Rheinmetall's completed takeover of the German shipbuilder NVL makes it six, not five. The clustering is real either way.