Amphibious

The U.S. Marine Corps is working toward adding an active protection system (APS) capability to its fleet of 8×8 wheeled Amphibious Combat Vehicles (ACV). APSs on the market today are generally designed to defeat incoming anti-tank guided missiles and other infantry anti-armor weapons. However, many of them also have the inherent ability to down incoming drones or are being modified to address this ever-growing threat, something TWZ previously explored in a detailed feature. The Marines are already exploring additional options to improve the ACV’s defenses against uncrewed aerial attackers, as well as other upgrades to the vehicles.

Chris Melkonian, the Marine Corps’ current Program Manager for Advanced Amphibious Assault (PM AAA), talked today about APS for the ACV fleet and other plans for those vehicles at the annual Modern Day Marine exposition, at which TWZ is in attendance.

The Marines currently field two ACV variants, the baseline personnel carrier type (ACV-P) and a version optimized for command and control tasks (ACV-C). The service is in the process of acquiring two more variants, one armed with a turreted 30mm cannon (ACV-30) and a recovery vehicle version fitted with a crane and other specialized features (ACV-R). The Corps is presently targeting 2028 for reaching initial operational capability with the ACV-30 and the ACV-R.

The Marines view the entire ACV family as central to its ability to conduct amphibious operations, as well as for providing additional lethality and other support to forces once ashore. At present, the service is planning to acquire a total fleet of 608 ACVs, consisting of 389 ACV-Ps, 33 ACV-Cs, 152 ACV-30s, and 34 ACV-Rs. Prime contractor BAE Systems has also proposed additional variants, including ones configured for electronic warfare or dedicated to the counter-drone role.

In 2018, the Corps announced it had selected the ACV as the replacement for its Cold War-era tracked Assault Amphibious Vehicle (AAV) family. The service announced the formal retirement of the AAV last fall.

There are already “things that we’re doing today to make the ACV family vehicles even more capable,” Melkonian said at Modern Day Marine. “The analogy I use is the ACV that Marines are using today is not the ACV that they’re going to use in the future.”

This includes an “active protection system,” he added. “We’re working with the vendor to mature that capability. We’re going to move that right into production.”

Recently released budget documents also say that the Marines are asking for $28.35 million in Fiscal Year 2027 for “Ancillary Equipment” for the ACV fleet, which “is primarily attributed to the procurement of Special Mission Kits for the Active Protective System (APS).” Those same documents further note that the “funding provides APS production kits, integration kits, installation labor, countermeasures, and spares for 21 ACV-P vehicles and will add a new defensive capability to existing vehicles.”

However, neither Melkonian nor the budget documents have said what specific type of APS the ACVs are now in line to get, or when. TWZ has reached out to the service for more information.

This is certainly not the U.S. military’s first foray into APSs for armored vehicles. The U.S. Army previously integrated the Israeli-designed and combat-proven Trophy APS onto a portion of its M1 Abrams tanks.

TROPHY is the world’s ONLY operational APS (Previous Version – Updated Video Available)

That service is also now in the process of adding another Israeli-developed APS, Iron Fist, onto at least some of its Bradley Fighting Vehicles. The Army’s version of Iron Fist, now designated as the XM251, is also set to be fitted to next-generation M1E3 tanks and a planned replacement for the Bradley family, tentatively designated the XM30.

There are other APS designs on the market today that the Marines could have chosen for integration onto the ACV, as well.

As noted, APSs available today are generally designed to neutralize anti-tank guided missiles and other infantry anti-armor weapons. They typically achieve this through the use of ‘hard-kill’ projectiles designed to destroy targets either using an explosive warhead or via the sheer force of impact. Hard-kill APSs use a mixture of sensors, which can include small-form-factor radars and electro-optical/infrared cameras, to cue those interceptors to engage incoming threats.

From when the Marines first announced the selection of BAE’s ACV back in 2018, TWZ has noted that an APS could provide the vehicles with a valuable extra layer of defense against anti-armor missiles and rockets. More capable infantry anti-armor weapons continue to be developed and proliferate globally. Those threats present additional challenges in beach landing scenarios for amphibious vehicles like the ACV, which move much more slowly in the water than they do on land.

The threat that drones pose, and to armored vehicles in particular, which TWZ has been sounding the alarm on for years, has also now been fully rammed into the public consciousness. This is thanks largely to the stark visuals of tanks and other vehicles being attacked by uncrewed aerial systems (UAS) that emerge on a daily basis now from the ongoing conflict in Ukraine.

A Ukrainian drone from the 79th Air Assault Brigade drops a 40mm HEDP grenade on a Russian UR-77 Meteorit, causing a catastrophic payload explosion. pic.twitter.com/SsaQCKXsNL

— OSINTtechnical (@Osinttechnical) August 14, 2023

Drones are an ever-more common and still evolving threat across a growing number of conflict zones worldwide. First-person view (FPV) type kamikaze drones controlled via fiber optic cable have become a particular point of concern, since they are impervious to radio frequency jamming. In turn, this has already prompted the development of a variety of active and passive countermeasures for armored and unarmored vehicles. We will come back to this in a moment.

TWZ has previously laid out a detailed case specifically for using hard-kill APSs to provide added counter-drone defense for armored vehicles. The Israeli firms behind Trophy and Iron Fist have both now notably demonstrated the ability of their respective systems to defeat uncrewed aerial threats in certain envelopes, as can be seen in the videos below. It should be noted that Trophy, Iron Fist, and other hard-kill APSs have a limited number of engagement opportunities and are not really intended to defeat large volumes of threats simultaneously, such as drones attacking in swarms.

Trophy® APS – The land maneuver enabler

Iron Fist APS | Active Protection System for Armored Vehicles

When it comes to the APS capability now planned for Marine ACVs, “that is not going to be the end-all, be-all,” Melkonian, the Marine Corps’ Program Manager, said today. “We’re constantly looking at what the next generation of APS is and how we can get that onto the platform in a lightweight form factor.”

Melkonian also highlighted other potential counter-drone and more general survivability upgrades that could be on the horizon for ACV. This could include the integration of directed energy weapons and some form of added overhead protection. Top-down attacks on vehicles where the armor is typically thinnest can be very threatening, in general.

As an aside, the Army has already been working to acquire hundreds of Top Attack Protection (TAP) add-on armor systems for installation on its M1 Abrams tanks and other armored vehicles. This reflects an expanding global trend in the integration of so-called ‘cope cage’ type armor around the turrets and other areas of armored and unarmored vehicles, primarily to protect against drone attacks. The first cope cages appeared on Russian tanks in the lead-up to the all-out invasion of Ukraine in 2022. This kind of armor does present tradeoffs, including the potential to interfere with other capabilities, such as APSs.

Improved “situational awareness, that’s kind of a gateway to counter-UAS, in terms of the ability to sense your environment,” Melkonian also noted today while talking about other possible upgrades for the ACV. “Take all that video on board and then be able to feed that into [a] counter-UAS system.”

Melkonian highlighted several other areas of interest where the Marines are looking to improve the ACV’s capabilities. His list included things like reducing the vehicle’s signatures to make it harder for enemies to spot, improving its mobility while in the water, and upgrades to just help keep everything inside dry.

“Marines operate in very humid, very difficult environments,” he explained. “The ability to dehumidify the vehicles is a critical enabler, being able to improve the maintenance strategy and keeping [sic] those components running for as long as they need to.”

Broadly speaking, the Marines are interested in new “lightweight solutions, advanced technology, and anything that’s going to be marinized. It must be marinized,” he added. “I can’t tell you how many solutions have been picked, and that’s one of the first questions we ask, and sometimes the solutions are designed for a marinized environment, sometimes they’re not. Marines go where no one else goes, and we’ve got to be able to make sure that our capabilities can support their needs.”

The core marinization requirement will apply to the APS integration just like any other upgrades for Marine ACVs.

Altogether, the addition of active protection systems looks to be just one important upgrade for the Marine Corps’ ACV fleet now on the horizon.

Eric Tegler contributed to this story.

Contact the author: joe@twz.com

April 27 (Asia Today) — South Korea’s Navy and Marine Corps conducted a major joint amphibious landing drill in Pohang, testing combined operations involving manned and unmanned assets, the military said Monday.

The exercise, held on the coast of Dokseok-ri in Pohang, North Gyeongsang Province, involved about 3,200 troops from the Army, Navy, Air Force and Marine Corps.

The drill included Korean Amphibious Assault Vehicles, the large transport ship Marado, MUH-1 Marineon helicopters, P-8A maritime patrol aircraft, KF-16 fighter jets, AH-64E attack helicopters and drones operated by the Drone Operations Command.

The exercise focused on “decisive action,” a key phase of amphibious operations in which Marine landing forces secure a beachhead with support from naval gunfire and air power before transitioning to ground operations.

A New Zealand Army platoon joined the landing force for the first time, operating with South Korean Marines. The New Zealand troops trained for two weeks before the landing, including urban operations, combat shooting and boarding and dismounting drills using amphibious vehicles.

The South Korean military said the exercise also tested responses to enemy drones, mine-clearing operations, anti-submarine warfare and air defense procedures.

Logistics drones were used to deliver ammunition, combat rations and medical supplies to units operating deep in enemy territory. U.S. Navy 7th Fleet personnel also took part in mine countermeasure operations.

Special operations forces used first-person-view drones for the first time during advance force operations, collecting real-time intelligence while infiltrating target beaches and clearing obstacles.

“This exercise strengthened the Navy and Marine Corps’ joint operational capability as one team and verified the practicality of manned-unmanned combined forces using advanced science and technology,” said Navy Capt. Hwang Sang-geun, commander of the amphibious task force.

— Reported by Asia Today; translated by UPI

© Asia Today. Unauthorized reproduction or redistribution prohibited.

Original Korean report: https://www.asiatoday.co.kr/kn/view.php?key=20260428010008699

The Pentagon is reportedly sending the Wasp class amphibious assault ship USS Boxer and the rest of its Amphibious Ready Group (ARG), loaded with elements of the 11th Marine Expeditionary Unit (MEU). This comes as the Trump administration is reported to be increasingly considering seizing or blockading Iran’s highly strategic Kharg Island in the Persian Gulf as part of a new phase of Operation Epic Fury.

It has now been widely reported that what is described as an “accelerated” deployment of the Boxer Amphibious Ready Group and the 11th MEU from the West Coast will be in support of Operation Epic Fury.

The Boxer Amphibious Ready Group also includes two other amphibious warfare ships, the San Antonio class USS Portland and the Whidbey Island class USS Comstock. The 11th MEU has roughly 2,500 personnel, in total, and includes air and ground components.

This follows reports last week that the America class amphibious assault ship USS Tripoli and its ARG, carrying elements of the 31st MEU, had also begun moving from the Pacific toward the Middle to support ongoing operations against Iran.

Axios reported today that the Trump administration could be leaning toward establishing a blockade around Iran’s Kharg Island, through which it exports much of its oil, or occupying it, citing unnamed officials. The central goal of doing this would be to step up pressure on the regime in Tehran to, in turn, force it to reopen the Strait of Hormuz. Traffic through that waterway has come to a virtual halt, which is causing massive reverberations across global energy markets.

“[Trump] wants Hormuz open. If he has to take Kharg Island to make it happen, that’s going to happen. If he decides to have a coastal invasion, that’s going to happen,” one official said, according to Axios. “But that decision hasn’t been made.”

The U.S. military carried out extensive strikes on Kharg Island this past weekend. A deployment of U.S. ground troops there would be a major escalation that could have significant ramifications, including domestically.

“We’ve always had boots on the ground in conflicts under every president, including Trump. I know this is a fixation in the media, and I get the politics, but the president is going to do what’s right,” a second official, who also said no decision has yet been made, said, per Axios.

Just yesterday, TWZ spoke with Joseph Votel, the former commander of U.S. Central Command, with a particular focus on the tumultuous Strait of Hormuz, through which around 20 percent of the world’s oil passes. You can read that interview here.

In the meantime, publicly available flight-tracking data indicates that the U.S. Navy is using MQ-4C Triton intelligence, surveillance, and reconnaissance drones to monitor Kharg Island as part of their patrols of the northern Persian Gulf.

Trump has warned that he might consider targeting oil facilities on the island if Iran or other countries “do anything to interfere” with the safe passage of ships through the strait.

Destroying or damaging oil infrastructure on Kharg could have unintended side effects, however. On the one hand, it would further push up global oil prices. The complex nature of infrastructure might take years to repair, which would compound this. In the long term, there is also the question of whether oil infrastructure here should be preserved for the benefit of a potential new Iranian government.

Any successor to the current regime would lose out on vital oil income, potentially driving further internal strife.

There is also the possibility that seizing the island and cutting off the current Iranian government from its most vital source of revenue could be used as a catalyst to bring about its fall.

Then there is the huge question about the kind of military effort that would be required to seize Kharg. This would require a large-scale, sustained operation and would be brought with risk. The island is only 20 miles from the Iranian mainland, putting whatever U.S. force is there at extreme risk of bombardment of multiple types. Getting amphibious assault ships through the Strait and into the Gulf would be an issue, as well, and those ships would be heavily targeted during transit and especially once inside the Gulf. With this in mind, a longer-range aviation assault would be most likely.

A naval blockade of the island might be easier to achieve in the short term, but it would run the risk of Iranian attacks, likely involving uncrewed surface vessels (USVs), drones, and other asymmetric options, as well as anti-ship cruise missiles, the use of which has been limited up to this point, as you can read about here.

As already noted, additional U.S. forces are headed to the region in the form of the Tripoli ARG and the 31st Marine Expeditionary Unit (MEU). While the deployment of the big-deck amphibious assault ship USS Tripoli had already been reported, we now know it is being supported by the amphibious transport docks USS San Diego (LPD-22) and USS New Orleans (LPD-18), thanks to publicly available ship-tracking data.

What exactly the next phase of Operation Epic Fury will look like could be clearer as the Navy amphibious warfare ships and the thousands of Marines they are carrying get closer to the Middle East.

UPDATES

UPDATE: 6:16 PM EST –

There are some mixed messages coming out of Washington about the future of Epic Fury.

President Donald Trump said he is considering “winding down” the war on Iran. His comments, delivered on his Truth Social account, come even though two Marine Expeditionary Units (MEUs) are steaming toward the Middle East and the Pentagon has reportedly drawn up plans to put American troops into Iran with the president’s approval.

Trump added that the U.S. could end the war effort even with the Iranians still closing the Strait of Hormuz.

“We are getting very close to meeting our objectives as we consider winding down our great Military efforts in the Middle East with respect to the Terrorist Regime of Iran,” Trump proclaimed.

He stated that the U.S. has: “(1) Completely degrading Iranian Missile Capability, Launchers, and everything else pertaining to them. (2) Destroying Iran’s Defense Industrial Base. (3) Eliminating their Navy and Air Force, including Anti Aircraft Weaponry. (4) Never allowing Iran to get even close to Nuclear Capability, and always being in a position where the U.S.A. can quickly and powerfully react to such a situation, should it take place. (5) Protecting, at the highest level, our Middle Eastern Allies, including Israel, Saudi Arabia, Qatar, the United Arab Emirates, Bahrain, Kuwait, and others.”

The Strait, Trump added, “will have to be guarded and policed, as necessary, by other Nations who use it — The United States does not! If asked, we will help these Countries in their Hormuz efforts, but it shouldn’t be necessary once Iran’s threat is eradicated. Importantly, it will be an easy Military Operation for them.”

Our coverage has ended for the day. Stay tuned for more.

UPDATE: 5:15 PM EST –

Retired Marine Gen. James Mattis, who served as Defense Secretary and CENTCOM commander, weighed in on the war, saying he doesn’t believe regime change is likely.

Iranian state media warns Iran will target the UAE’s industrial port city of Ras Al-Khaimah if Iranian islands are again attacked from that nation, Arab News reported.