Tag Archives: Logistics

UUVs as Stealthy Logistics Platforms

Guest post for UUV Week by  Steve Weintz.

As potential adversaries sharpen their abilities to deny U.S. forces the freedom to maneuver, they concurrently constrain America’s traditional strength in supporting expeditionary power. Sea-bases bring the logistical “tail” closer to the expeditionary “teeth,” but they must stay outside the reach of A2/AD threats. Submarines remain the stealthiest military platform and will likely remain so for some time to come. In addition to their counter-force and counter-logistics roles, subs have seen limited service as stealth cargo vessels. History demonstrates both the advantages and limitations of submarines as transports. Submarine troop carriers, such as those used in SOF operations, are distinct from submarine freighters; the submarine’s role in supply and sustainment is addressed here. Unmanned Underwater Vehicles (UUVs) will revolutionize minesweeping, intelligence collection, and reconnaissance. But they may also finally deliver on the century-old promise of the submarine as a stealthy logistics platform.

PIC
Deutschland (Launched 1916)

Although early submarine pioneers like Simon Lake saw commercial advantage in subs’ ability to avoid storms and ice, submarines as cargo carriers were first used operationally to counter Britain’s A2/AD strategy against Germany in World War I. The Deutschland and her sister boat Bremen were to be the first of a fleet of submarine blockade-runners whose cargo would sustain the German war effort. Despite her limited payload – only 700 tons – the privately-built Deutschland paid for herself and proved her design concept with her first voyage. But the loss of Bremen and America’s turn against Germany scuttled the project.

Cargo subs were again employed in World War II. The “Yanagi” missions successfully transported strategic materials, key personnel, and advanced technology between Germany and Japan. The Japanese also built and used subs to resupply their island garrisons when Allied forces cut off surface traffic. Their efforts met with limited success – enough to continue subsequent missions but not enough to shift the outcome of the Allied strategy. The Soviet Union also used submarines to sustain forces inside denied areas at Sevastopol and elsewhere. These efforts inspired serious consideration of submarine transports that carried over well into the Cold War. Soviet designers produced detailed concepts for “submarine LSTs” capable of stealthily deploying armor, troops and even aircraft.

Dr. Dwight Messimer, an authority on the Deutschland, points out that cargo subs – with one notable exception – have never really surmounted two key challenges. They have limited capacity compared with surface transports, and their cost and complexity are far greater. If subs are made larger for greater capacity, they forfeit maneuverability, submergence speed, and stealth. If built in greater numbers their expense crowds out other necessary warship construction. The Deutschland and Japan’s large transport subs handled poorly and were vulnerable to anti-submarine attacks. Many cargo subs were converted into attack subs to replace attack-sub losses.

The one notable exception to these difficulties is “cocaine subs” so

A "narco-submarine" is apprehended off Honduras
A “narco-submarine” is apprehended off Honduras

frequently encountered by the US Coast Guard. These rudimentary stealth transports are simple and inexpensive enough to construct in austere anchorages, make little allowance for crew comfort, and have proven successful in penetrating denied US waters. The tremendous value of their cargoes means that only a few of these semi-subs need to run the blockade for their owners’ strategy to succeed.

Logistical submarine designers could potentially overcome their two primary challenges by drawing inspiration from smugglers and from nature. UUVs, like other unmanned platforms, enjoy the advantages gained by dispensing with crew accommodations or life-support

MSub's MASTT
MSub’s MASTT

equipment. Large UUVs built and deployed in large numbers, like cocaine subs and pods of whales, could transport useful volumes of cargo in stealth across vast distances. MSubs’ Mobile Anti-Submarine Training Target (MASTT), currently the largest UUV afloat, offers a glimpse at what such UUVs might look like. At 60 metric tons and 24 meters in length, MASTT is huge by UUV standards but very small compared to most manned subs.

3D printing technology is rapidly expanding, producing larger objects from tougher, more durable materials. Already, prototype systems can print multistory concrete structures and rocket engines made of advanced alloys. It will soon be possible to print large UUV hulls of requisite strength and size in large numbers. Indeed, printed sub and boat hulls were one of the first applications conceived for large-scale 3D printing. Their propulsion systems and guidance systems need not be extremely complex. Scaled-down diesel and air-independent propulsion systems, again mass-produced, should suffice to power such large UUVs. These long-endurance mini-subs would notionally be large enough to accommodate such power-plants.

10 large UUVs of 30 tons’ payload each could autonomously deliver 300 tons of supplies to forward positions in denied areas. 300 tons, while not a great deal in comparison to the “iron mountain” of traditional American military logistics, is nevertheless as much as 5 un-stealthy LCM-8s can deliver.

A “pod” of such UUVs could sail submerged from San Diego, recharging at night on the surface, stop at Pearl Harbor for refueling and continue on their own to forward bases in the Western Pacific.

Their destinations could be sea-bases, SSNs and SSGNs, or special forces units inserted onto remote islands. Cargoes could include food, ammunition, batteries, spare parts, mission-critical equipment, and medical supplies. In all these cases, a need for stealthy logistics – the need to hide the “tail” – would call for sub replenishment versus traditional surface resupply. Depending on the mission, large UUVs could be configured to rendezvous with submerged subs, cache themselves on shallow bottoms, or run aground on beaches. Docking collars similar to those used on deep-submergence rescue vehicles could permit submerged dry transfer of cargo. UUVs could also serve as stealthy ship-to-shore connectors; inflatable lighters and boats could be used to unload surfaced UUVs at night.

When confronted with anti-submarine attacks a “pod” or convoy of such UUVs could submerge and scatter, increasing the likelihood of at least a portion of their cumulative payload arriving at its destination. Some large UUVs in such a “pod” could carry anti-air and anti-ship armament for defense in place of cargo, but such protection entails larger discussions about armed seaborne drones.

A submarine – even a manned nuclear submarine – is not the platform of choice if speed is essential. Airborne resupply can deliver cargoes much more quickly. But not all cargoes need arrive swiftly. The water may always be more opaque than the sky, and larger payloads can be floated than flown. It remains to be seen if large stealthy unmanned transport aircraft can be developed.

While these notions seem fanciful there is nothing about the technology or the concept beyond the current state of the art. Large numbers of unmanned mini-subs could overcome both the capacity and expense limitations that limited the cargo submarine concept in the past. The ability to stealthily supply naval expeditionary forces despite A2/AD opposition would be a powerful force multiplier.

Steve Weintz is a freelance journalist and screenwriter who has written for War is Boring, io9 and other publications.

Lessons from History: Carthage & Transport Supremacy

The role of the United States in contingency operations is changing. In all of the large-scale international interventions of the past few years, namely Libya, Mali, and the Central African Republic, the United States’ contributions consisted primarily of transport capacity in both the seas and the skies to bring foreign ground forces to the conflict. This trend appears unprecedented for a global power to pursue its interests but, as the saying goes, there is nothing new under the sun. The ancient maritime power of Carthage utilized the same strategy effectively in the fourth century B.C

For those who are unfamiliar, Carthage was a preeminent maritime power for hundreds of years in the Mediterranean. Pre-saging Alfred Thayer Mahan and 19th century European colonial powers, Carthage embraced an empire not built by massive land holdings but by a disparate collection of trading spheres, ranging from Spain to Sicily, connected by the era’s most powerful navy. There were very few powers that could challenge them on the open seas, making the Western Mediterranean a Carthaginian lake by which it could generate wealth.

Most people know the Carthaginians as the enemies of Rome in the era of Hannibal but that was not always the case. Up until their first dramatic clash in the thirdcentury B.C., the Romans and Carthaginians were allies were allies of convenience. The Carthaginians faced consistent incursions from Numidians in North Africa and colonial wars with the Greeks in Sicily while the Romans had to contend with Greek colonies and restive Samnites to their south. This culminated in the early fourth century B.C. when the Carthaginians used their navy to transport Roman legions to the south to fight their common Greek enemies. Carthage did not have to sacrifice any men to achieve their foreign policy objectives and the Romans, without naval lift, would have spent a much longer time marching their army south through dangerous territory. The Carthaginians were thus able to find manpower to handle operations they could not undertake and the Romans gained rapid mobility. Both sides profited from the arrangement.
  
The United States is in a similar position in the modern as Carthage was in the ancient world. The United States has unmatched transport capacity in both the maritime and air domains, evidenced in all possible measures: numbers of sea/air transport vehicles, total cargo capacity, and experience in deployment logistics. Many other nations have tactical transports but very few others have either the numbers of strategic-level transports or the financial resources necessary to support long deployments. This situation gives the United States a unique position to influence global deployment of forces; it offers a quasi-veto to undesirable deployments and a force-multiplier for operations that it wants to see conducted.
 
While the United States has unmatched transport capacity, there are a host of reasons why the United States cannot project its power simultaneously to tackle every global crisis: ongoing operations in Afghanistan, a lack of popular support for committing troops overseas, and tightening budgets restrict the United States. Carthage had similar limitations, due primarily to budgets and the mercenary make-up of their armed forces, which they circumvented in their wars against the Greeks by leveraging Roman manpower. The United States is already doing the same for France in Mali and the United Nations in the Central African Republic.
 
The story of transport supremacy did not end well for Carthage. In the First Punic War, fought a scant few years after the common war against the Greeks, the Romans raised a substantial navy and challenged Carthage’s dominance on the seas. Defeat in that war, combined with the defeats in the Second and Third Punic wars, would spell the end of Carthage’s empire. While the Carthaginians ushered in their doom by providing transport supremacy to their eventual conquerors, the United States is in no such risk of the same, allowing it to leverage the policy without stoking an existential threat to its existence.
 
The future looks bright for those with transport supremacy.
 
Matthew Merighi is a civilian employee with the United States Air Force. His views do not reflect those of the United States Government, Department of Defense, or Air Force.

Sea Control 40 (East Atlantic) – Defense Cooperation

seacontrol2

Alex Clarke is joined by the cadre in a third panel discussion for the East Atlantic Series. They discuss multination forces: whether and how nations should combine together to maximize security and minimize cost.  The particular focus of this session is feasibility: how nations can go about building cooperative strategies and whether they would want to.

DOWNLOAD: Sea Control 40 (East Atlantic) -Defense Cooperation

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Iran Claims to Have Reverse-Engineered Amazon Drone

International Maritime Satire Week Warning: The following is a piece of fiction intended to elicit insight through the use of satire and written by those who do not make a living being funny – so it’s not serious and very well might not be funny. See the rest of our IntMarSatWeek offerings here

TEHRAN – Iran’s state TV aired footage Wednesday of what it described as a working copy of an Amazon Prime quadrotor helicopter drone that it says it captured while flying over Iranian territorial waters. Iran first claimed in March, 2013, to have brought down the drone that it says was engaged in illegally violating user-privacy agreements.

While Amazon’s Central Delivery Command refuses to confirm or comment on whether Iran is in possession of one of its drones, sources say a drone was lost during an Amazon Prime Obstacle Clearance exercise early last year. “The model matches what went missing, but we’d be truly surprised if the Iranians had the capabilities by themselves to force down and recover the drown in a state that allowed them to reverse engineer a copy,” said a senior Amazon Prime officer.

A still from Iranian state television of a purportedly reverse-engineered Amazon drone
A still from Iranian state television of a purportedly reverse-engineered Amazon drone

Several independent analysts speculated on the possible involvement of Evil-Bey, or E-Bey, a Turkish front company known for facilitating Iran’s evasion of oil sanctions. E-Bey is considered by many to have the know-how and a large stockpile of cash necessary to pull of such a technical feat. Observers based in the Caucuses reported recently spotting E-Bey drones of a similar design flying oil barrels to refineries in southern Russia. 

Jean Carthwright, a logistics drone expert at the Institute for the Study of Gizmos, pointed to further circumstantial evidence. “At the time Amazon lost contact with its quadrotor it was attempting to delivery a DVD of the second season of BBC’s Sherlock to crew aboard the ASS Express, one of Amazon’s intel-collection ships,” said Carthwright. “In April, a review posted to Amazon’s website by A. Khameni denounced the season as ‘insufficiently respectful to Allah and uneven, particularly in the Hounds of Bakersfield episode – Sherlock is just too petulant at times. But what a cliff-hanger! God willing Season 3 will respect the audiences’ intelligences with a plausible solution to Sherlock’s faked demise. Death to America!'”  

 

The opinions and views expressed in this post are his alone and are presented in his personal capacity. They do not necessarily represent the views of U.S. Department of Defense or the U.S. Navy.