By Captain George Galdorisi
The U. S. Navy stands at the precipice of a new era of technology advancement. In an address at a military-industry conference, the then-U.S. Chief of Naval Operations, Admiral Michael Gilday, revealed the Navy’s goal to grow to 500 ships, to include 350 crewed ships and 150 uncrewed maritime vessels. This plan has been dubbed the “hybrid fleet.” In an address at the Reagan National Defense Forum, his successor, Admiral Lisa Franchetti, cited the work of the Navy’s Unmanned Task Force, as well numerous exercises, experiments and demonstrations where uncrewed surface vessels were put in the hands of Sailors and Marines, all designed to advance the journey to achieve the Navy’s hybrid fleet.
More recently, other speeches and interviews addressing the number of uncrewed surface vessels the Navy intends to field culminated in the issuance of the Chief of Naval Operations Force Design 2045, and subsequently the Chief of Naval Operations Navigation Plan for America’s Warfighting Navy, both of which call for 350 crewed ships and 150 large uncrewed maritime vessels. These documents provide the clearest indication yet of the Navy’s plans for a future fleet populated by large numbers of uncrewed surface vessels (USVs).
The reason for this commitment to uncrewed maritime vessels is clear. During the height of the Reagan Defense Buildup in the mid-1980s, the U.S. Navy evolved a strategy to build a “600-ship Navy.” That effort resulted in a total number of Navy ships that reached 594 in 1987. That number has declined steadily during the past three-and-one-half decades, and today the Navy has less than half the number of ships than it had then. However, the rapid growth of the technologies that make uncrewed surface vessels increasingly capable and affordable has provided the Navy with a potential way to put more hulls in the water.
However, the U.S. Congress has been reluctant to authorize the Navy’s planned investment of billions of dollars in USVs until the Service can come up with a concept-of-operations (CONOPS) for using them. Congress has a point. The Navy has announced plans to procure large numbers of uncrewed systems—especially large and medium uncrewed surface vessels—but a CONOPS, in even the most basic form, has not yet emerged. Additionally, while the composition of the future Navy’s crewed vessels is relatively well understood—based on ships being built and being planned—what those uncrewed maritime vessels will look like, let alone what they will do, has yet to be fully determined.
That said, the Navy has taken several actions to define what uncrewed maritime vessels will do and thus accelerate the journey to have uncrewed platforms populate the fleet. These include publishing an Unmanned Campaign Framework, standing up an Unmanned Task Force, establishing Surface Development Squadron One in San Diego and Surface Vessel Division One in Port Hueneme, CA, and conducting a wide range of exercises, experiments and demonstrations where operators have had the opportunity to evaluate uncrewed maritime vessels.
All these initiatives will serve the Navy well in evolving a convincing CONOPS to describe how these innovative platforms can be leveraged to achieve a hybrid fleet and gain a warfighting advantage over high-end adversaries. Fleshing out how this is to be done will require that the Navy describe how these platforms will get to the operating area where they are needed, as well as what missions they will perform once they arrive there.
A key part of this evolving CONOPS will involve integrating crewed ships and uncrewed maritime vessels. This means that both will need to operate as a synergistic fighting force, not all merely steaming together to perform a mission. This will require leveraging emerging technologies that can connect these platforms in a fashion now called man-machine teaming.
U.S. Navy’s Commitment to Uncrewed Maritime Vessels
It is beyond the scope of this article to attempt to detail the reasons for the precipitous decline in the number of crewed ships. Indeed, the most recent Navy Long-Range Shipbuilding Plan details 19 ship decommissionings during this fiscal year, more than the number of ships being commissioned. Many—especially the U.S. Congress—have encouraged the Navy to increase the number of ships it fields. Add to this such factors as the increasing cost to build ships, and especially the cost to man these vessels (Seventy percent of the total ownership costs of surface ships is the cost of personnel to operate these vessels over their lifecycle), and the fact that the Navy is literally wearing these ships out more rapidly than anticipated in order to meet the increasing demands of U.S. Combatant Commanders, and it is easy to see why the Navy has difficulty growing the number of crewed surface vessels.
The rapid growth of the technologies that make uncrewed surface vessels increasingly capable and affordable has provided the Navy with a potential way to put more hulls in the water. To support these goals regarding large numbers of uncrewed maritime platforms populating the Fleet, the Navy established an Unmanned Task Force to provide stewardship for Navy-wide efforts to accelerate efforts regarding uncrewed systems. From all indications, it seems that for the U.S. Navy, the intent is to go all-in on uncrewed maritime vessels and field a hybrid force of crewed ships and uncrewed maritime systems. Importantly, the intent is to have these uncrewed systems work in conjunction with manned platforms and achieve the goal of manned-unmanned teaming.
In a presentation at a Center for Strategic and International Studies/U.S. Naval Institute forum, Vice Admiral Jimmy Pitts, deputy chief of naval operations for warfighting requirements and capabilities (N9), put the focus on uncrewed maritime systems in these terms: “We are leading the way with unmanned systems. We are leveraging the success of the Navy’s unmanned task force as well as the disruptive capabilities office. Our goal is to get unmanned surface system solutions to the Fleet within the next two years.” Admiral Pitts went on to ask the questions: “What will unmanned systems do operationally? How will they get to the war at sea and littoral operating areas? How will they stay in those areas and remain ready for conflict?”
In an article in U.S. Naval Institute Proceedings, the U.S. Indo-Pacific Commander, Admiral Samuel Paparo, put the emphasis on scaling robotic and autonomous systems in an operational context, noting:
The CNO is focusing on rapidly developing, fielding, and integrating UxSs. These systems will augment the multi-mission conventional force to increase lethality, sensing, and survivability. Project 33 [part of the Navigation Plan] will allow the Navy to operate in more areas with greater capability. Unmanned systems provide the ability to project fires and effects dynamically, at any time, from multiple axes, and with mass.
Recognizing that the United States is in an “AI arms-race” with our peer adversaries, a report by the Navy’s Science and Technology Board: The Path Forward on Unmanned Systems, advises the Navy to fully leverage AI-technologies, noting: “As they design, develop and acquire new systems, DON will want to take advantage of rapidly changing technology such as AI and autonomy.” This builds on the Navy’s desire to lower total operating costs by moving beyond the current “one UxS, multiple joysticks, multiple operators” paradigm module that exists today.
A Concept of Operations for Getting Uncrewed Surface Vessels to the Fight
The concept of operations proposed is to marry various size surface, subsurface and aerial uncrewed vehicles to perform missions that the U.S. Navy has—and will continue to have—as the Hybrid Fleet evolves. The Navy can use evolving large uncrewed surface vessels as a “truck” to move smaller USVs, UUVs and UAVs into the battle space in the increasingly contested littoral environment. The Navy has several alternatives for this platform:
- The Navy’s program of record LUSV. The Navy envisions these LUSVs as being 200 feet to 300 feet in length and having full load displacements of 1,000 tons to 2,000 tons, which would make them the size of a corvette.
- Unmanned Surface Vessel Division One (USVDIV-1) has stewardship for two surrogates for LUSVs, the Ranger and Nomad, as well as two MUSV prototypes, Sea Hunter and Seahawk. The Navy was sufficiently confident in the operation of its LUSV and MUSV prototypes to deploy them to a recent international Rim of the Pacific (RIMPAC) exercise.
- The MARTAC T82 Leviathan, a scaled-up version of the T38 Devil Ray, is an MUSV capable of either carrying an approximately 35,000-pound payload or, alternatively, carrying smaller craft and launching them toward the objective area.
While there are a plethora of important Navy missions this integrated combination of uncrewed platforms can accomplish, this article will focus on two: intelligence surveillance and reconnaissance (ISR) and mine countermeasures (MCM). There are many large, medium, small and ultra-small uncrewed systems that can be adopted for these missions. The technical challenge remains that they must be designed to ensure that the multiple sized UxSs associated with these missions can be adapted to work together in a common mission goal.
Rather than speaking in hypotheticals as to how uncrewed vessels might be employed for these two missions, this article will offer concrete examples, using COTS uncrewed systems that have been employed in recent Navy and Marine Corps events. In each case, these systems not only demonstrated mission accomplishment, but also the hull, mechanical and electrical (HME) attributes and maturity that Congress is demanding.
While there are a wide range of medium uncrewed surface vessels (MUSVs) that can potentially meet the U.S. Navy’s needs, there are three that are furthest along in the development cycle. These MUSVs cover a range of sizes, hull types and capabilities. They are:
- The Leidos Sea Hunter is the largest of the three. The Sea Hunter is a 132-foot-long trimaran (a central hull with two outriggers).
- The Textron monohull Common Unmanned Surface Vessel (CUSV), now renamed MCM-USV, features a modular, open architecture design.
- The Maritime Tactical Systems Inc. (MARTAC), catamaran hull uncrewed surface vessels (USV) include the Devil Ray T24 and T38 craft. The two Devil Ray USVs, along with their smaller MANTAS T12 USV, all feature a modular and open architecture design.
All of these MUSVs are viable candidates to be part of an integrated uncrewed solution CONOPS. I will use the MANTAS, Devil Ray and Leviathan craft for a number of reasons. First, they come in different sizes with the same HME attributes. Second, the Sea Hunter is simply too large to fit into the LUSVs the Navy is currently considering. Third, the MCM-USV is the MUSV of choice for the Littoral Combat Ship (LCS) Mine-Countermeasures Mission Package, and all MCM-USVs scheduled to be procured are committed to this program.
If the U.S. Navy wants to keep its multi-billion-dollar capital ships out of harm’s way, it will need to surge uncrewed maritime vessels into the contested battlespace while its crewed ships stay out of range of adversary anti-access (A2/AD) systems. This will require robust command and control systems,
Depending on the size that is ultimately procured, the LUSV can carry several T38 Devil Ray uncrewed surface vessels and deliver them, largely covertly, to a point near the intended area of operations. The T38 can then be sent independently to perform the ISR mission, or alternatively, can launch one or more T12 MANTAS USVs to perform that mission. Building on work conducted by the Navy laboratory community and sponsored by the Office of Naval Research, the T38 or T12 will have the ability to launch unmanned aerial vessels to conduct overhead ISR.
For the MCM mission, the LUSV can deliver several T38s equipped with mine-hunting and mine-clearing systems (all of which are COTS platforms tested extensively in Navy exercises). These vessels can then undertake the “dull, dirty and dangerous” work previously conducted by Sailors who had to operate in the minefield. Given the large mine inventory of peer and near-peer adversaries, this methodology may well be the only way to clear mines safely.
Operational Scenario for an Integrated Crewed-Uncrewed Mission
This scenario and CONOPS are built around an Expeditionary Strike Group (ESG) that is underway in the Western Pacific. The ESG is on routine patrol five hundred nautical miles from the nearest landfall. An incident occurs in their operating area and the strike group is requested to (1) obtain reconnaissance of a near-shore littoral area, and (2) determine if the entrance to a specific bay has been mined to prevent ingress. The littoral coastline covers two hundred nautical miles. This area must be reconnoitered within twenty-four hours without the use of air assets.
Command staff decides to dispatch the three LUSVs for the mission. Two LUSVs are each configured with four T38-ISR craft and the third LUSV is configured with four T38-MCM vessels. The single supervisory control station for the three LUSVs is manned in the mothership.
The three LUSV depart the strike group steaming together in a preset autonomous pattern for two hundred and fifty nautical miles to a waypoint that is central to the two hundred nautical mile ISR scan area, two hundred and fifty nautical miles from the shore. At this waypoint, the LUSV will stop and dispatch the smaller T38 craft and then wait at this location for their return. Steaming at a cruise speed of twenty-five knots, the waypoint is reached in about ten hours.
- Two T38-ISR craft are launched from each of the two LUSVs. The autonomous mission previously downloaded specifies a waypoint location along the coast for each of the four craft. These waypoints are fifty nautical miles apart from each other, indicating that each of the four T38 craft will have an ISR mission of fifty nautical miles to cover.
- Two T38-MCM craft are launched from the third LUSV. The autonomous mission previously downloaded has them transit independently along different routes to two independent waypoints just offshore of the suspected mine presence area where they will commence mine-like object detection operations.
- In this manner, each of the six craft will transit independently and autonomously to their next waypoint which will be their mission execution starting point.
- Transit from the LUSV launch point, depending on route, will be about two hundred and fifty to three hundred nautical miles to their near-shore waypoints. Transit will be at seventy to eighty knots to their mission start waypoint near the coast. Transit time is between four and five hours.
- The plan is for each of the T38-ISR craft to complete their ISR scan in four to five hours each and for the two T38-MCM craft to jointly scan the bottom and the water column for the presence of mine-like objects in four to five hours at a scan speed of six to eight knots.
The MANTAS and Devil Ray craft transit to the objective area and conduct their ISR and MCM missions. The timeline for the entire mission is as follows:
- LUSV detach strike group to T38 launch point and launch six T38: – 10-12 hours.
- T38 transit from launch point to mission ISR/MCM start waypoints: – 4-5 hours.
- ISR Mission and MCM mission time from start to complete: – 4-5 hours.
- T38 transit from mission completion point back to LUSV for recovery: – 4-5 hours.
- LUSV recover T38s and return to strike group formation – 10-12 hours.
Even with the ESG five hundred nautical miles from shore, the strike group commander has the results of the ISR and MCM scan of the shoreline littoral area within approximately twenty-four hours after the departure of the LUSVs from the strike group.
A Bright Future for Uncrewed Surface Vessels
This is not a platform-specific solution, but rather a concept. When Navy operators see a capability with different size uncrewed COTS platforms in the water successfully performing the missions presented in this article, they will likely press industry to produce even more-capable platforms to perform these tasks. This, in turn, will enable the Navy to field a capable Hybrid Fleet that will be the Navy’s Future Force.
While evolutionary in nature, this disruptive capability delivered using emerging technologies can provide the U.S. Navy with near-term solutions to vexing operational challenges, while demonstrating to a skeptical Congress that the Navy does have a concept-of-operations for the uncrewed systems it wants to procure.
Captain George Galdorisi (U.S. Navy – retired) is a career naval aviator and national security professional. During his 30-year career he had four tours in command and served as a carrier strike group chief of staff for five years. Additionally, he led the U.S. delegation for military-to-military talks with the Chinese Navy. He is the Emeritus Director of Strategic Assessments and Technical Futures at the Naval Information Warfare Center Pacific. He is the author of seventeen books, including four New York Times bestsellers. His most recent novel, Fire and Ice, was eerily prescient as it foresaw Russia’s invasion of Ukraine.
Featured Image: T38 Devil Ray USV
Feature Image Credit: Martak
