Tag Archives: Tactical Undersea Network Architectures (TUNA) program

The Act of Successful Sabotage: cables and pipelines

On October 12, 2022 Vladimir Putin, Russia’s president, gave an ominous warning. Energy infrastructure around the world was now “at risk”, he said. Mr Putin’s warning came a month after explosions tore through Nord Stream 1 and 2, a pair of gas pipelines running from Russia to Europe under the Baltic Sea. The pipes were not in use at the time. But the ruptures left plumes of methane bubbling to the surface for days…

Subsea pipelines and cables have proliferated since the first one was laid, in 1850…There are more than 530 active or planned submarine telecoms cables around the world. Spanning over 1.3m kilometers they carry 95% of the world’s internet traffic. In November 2021, cables serving underwater acoustic sensors off the coast of northern Norway—an area frequented by Russian submarines—were cut.

Western officials say that a particular source of concern is Russia’s Main Directorate of Deep-Sea Research, known by its Russian acronym GUGI. It has a variety of spy ships and specialist submarines—most notably the Belgorod, the world’s biggest submarine, commissioned in July 2022—which can work in unusually deep water. They can deploy divers, mini-submarines or underwater drones, which could be used to cut cables. 

Cable chicanery, though, is not a Russian invention. One of Britain’s first acts during the first world war was to tear up German telecoms cables laid across the Atlantic. Germany responded with attacks on Allied cables in the Pacific and Indian Oceans.

More recently, espionage has been the order of the day..I.n 2013 Edward Snowden, a contractor for the National Security Agency (NSA), America’s signals intelligence agency, revealed an Anglo-American project had tapped at least 200 fiber-optic cables around the world. Yet the seabed is not amenable to control. A paper published in 2021 noted that Estonia and other Baltic states had only a limited grasp of what was going on under the Baltic because of quirks of hydrology, scarce surveillance platforms and limited information-sharing between countries. It concluded, perhaps presciently: “It would be difficult to prevent Russian [drones] deployed in international waters from damaging critical undersea infrastructure.”…

The first step in a sabotage mission is finding the target. With big, heavy pipelines, which are typically made from concrete-lined metal sections, that is relatively easy. Older communication cables, being smaller and lighter, can shift with the currents. Newer ones are often buried, It is also increasingly possible for operators to detect tampering, through  “distributed fiber-optic sensing”, which can detect vibrations in the cable or changes in its temperature. But that will not reveal whether the problem is a geological event or an inquisitive drone—or which country might have sent it. Underwater attribution is slow and difficult.

Determined attackers, in other words, are likely to get through. The effects of a successful attack will differ. Pipelines and subsea electricity cables are few in number. If one is blown up, gas, oil or electricity cannot easily be rerouted through another. Communication cables are different. The internet was designed to allow data to flow through alternative paths if one is blocked. And at least when it comes to connections between big countries, plenty of alternatives exist. At least 18 communication cables link America and Europe…There is significant redundancy on these routes. But  “There’s no collective institution that records all the incidents that are going on, and what is behind them—we don’t have any statistics behind it.” according to  Elisabeth Braw of the American Enterprise Institute.

Excerpts from Sabotage at Sea: Underwater Infrastructure, Economist, Oct. 22, 2022

Mosaic Warfare: how to fight like a network

DARPA’s Strategic Technology Office (STO) on August 4, 2017 unveiled its updated approach to winning or deterring future conflicts. The foundation of STO’s new strategy rests on the recognition that traditional U.S. asymmetric technology advantage—such as highly advanced satellites, stealth aircraft, or precision munitions—today offer a reduced strategic value because of growing global access to comparable high-tech systems and components, many of which are now commercially available. Additionally, the high cost and sometimes decades-long development timelines for new military systems can’t compete with the fast refresh rate of electronics component technology on the commercial market, which can make new military systems obsolete before they’re delivered.

STO’s updated strategy seeks a new asymmetric advantage—one that imposes complexity on adversaries by harnessing the power of dynamic, coordinated, and highly autonomous composable systems.

“We’ve developed a technology-based vision that would enable highly complex, strategic moves by composing multiple contributing systems to enable what might be thought of as ‘mosaic warfare,’ in which individual components can respond to needs in real time to create desired outcomes,” said Tom Burns, director of STO. “The goal is to fight as a network to create a chain of effects—or, more accurately because these effects are not linear, ‘effects webs’—to deter and defeat adversaries across multiple scales of conflict intensity. This could be anything from conventional force-on-force battles to more nebulous ‘Gray Zone’ conflicts, which don’t reach the threshold of traditional military engagements but can be equally disruptive and subversive.”

U.S. military power has traditionally relied upon monolithic military systems where one type of aircraft, for example, is designed to provide a single end-to-end capability tailored to a very specific warfighting context—and be a significant loss if shot down. In contrast, the composable effects webs concept seeks a mosaic-like flexibility in designing effects for any threat scenario. By using less expensive systems brought together on demand as the conflict unfolds, these effects webs would enable diverse, agile applications—from a kinetic engagement in a remote desert setting, to multiple small strike teams operating in a bustling megacity, or an information operation to counter an adversary spreading false information in a population threatening friendly forces and strategic objectives. Mosiacs can rapidly be tailored to accommodate available resources, adapt to dynamic threats, and be resilient to losses and attrition.

This means that even if an adversary can neutralize a number of pieces of the mosaic, the collective can instantly respond as needed to still achieve the desired, overall effect.”…The mosaic strategy is also anticipated to change the way the military thinks about designing and buying future systems. Instead of spending years or even decades building exquisite, monolithic systems to rigid requirements, future acquisition programs would be able to buy mosaic “tiles” at a rapid, continuous pace. The true power of the new capabilities will come from the composite mosaic effects.

The approach will draw in part on a number of existing DARPA programs that are developing enabling technologies to achieve the challenging mosaic warfare architecture, including: The Complex Adaptive System Composition And Design Environment (CASCADE) program is addressing composition of existing and new systems; the System of Systems Integration Technology and Experimentation (SoSITE) program is focused on integrating the various systems to work together; Distributed Battle Management (DBM) and Resilient Synchronized Planning and Assessment for the Contested Environment (RSPACE) are addressing battle management command and control; and Communications in Contested Environments (C2E) and Dynamic Network Adaptation for Mission Optimization (DyNAMO) are focused on seamless, adaptable communications and networking.

Excerpts from Strategic Technology Office Outlines Vision for “Mosaic Warfare”, DARPA Press Release, Aug. 4, 2017

Undersea War Networks: DARPA Tuna

DARPA’s Tactical Undersea Network Architecture (TUNA) program completed its initial phase, successfully developing concepts and technologies aimed at restoring connectivity for U.S. forces when traditional tactical networks are knocked offline or otherwise unavailable. The program now enters the next phase, which calls for the demonstration of a prototype of the system at sea.

TUNA seeks to develop and demonstrate novel, optical-fiber-based technology options and designs to temporarily restore radio frequency (RF) tactical data networks in a contested environment via an undersea optical fiber backbone. The concept involves deploying RF network node buoys—dropped from aircraft or ships, for example—that would be connected via thin underwater fiber-optic cables. The very-small-diameter fiber-optic cables being developed are designed to last 30 days in the rough ocean environment—long enough to provide essential connectivity until primary methods of communications are restored.

Supplying power to floating buoy nodes on the open sea presents a particular challenge. During the first phase of the program, the University of Washington’s Applied Physics Lab (APL) developed a unique concept called the Wave Energy Buoy that Self-deploys (WEBS), which generates electricity from wave movement. The WEBS system is designed to fit into a cylinder that could be deployed from a ship or aircraft.

Excerpt from Networks of the Sea Enter Next Stage, DARPA website, Jan. 5, 2017

The Militarization of Deep Sea: DARPA Tuna

Tactical Undersea Network Architectures (TUNA). Solicitation Number: DARPA-BAA-14-32, Defense Advanced Research Projects Agency (DARPA)

DARPA is soliciting innovative research proposals in the area of undersea fiber optic-based communications networks. Proposed research should investigate innovative approaches that enable revolutionary advances in science, devices, or systems. Specifically excluded is research that primarily results in evolutionary improvements to the existing state of practice.  This solicitation seeks proposals for an initial fifteen month phase (Phase 1) of the Tactical Undersea Network Architectures (TUNA) program. Performers are sought for the following Technical Areas (TAs):

TA1. System designs
TA2. Small undersea fiber optic cables
TA3. Buoy node systems.

from Federal Business Opportunities, Apr. 17, 2014