The Marine Corps this week released a video showcasing the design and capabilities of its new Medium Landing Ship, or LSM, a vessel designed to move troops, equipment and supplies to shorelines without relying on established ports.
The new LSM is based on the Damen Shipyards Group’s Landing Ship Transport 100, or LST-100, design, which has a range of 3,400 nautical miles and can beach itself to deliver over 800 tons of cargo such as vehicles, embarked forces and long range fire assets, according to the video.
The ship, measuring roughly 100 meters, is also equipped with a flight deck that can support operations with unmanned aerial systems.
The Marine Corps framed the McClung-class ship as a supplemental asset within the broader fleet, capable of support operations across chains of islands or contested coastal areas, where smaller vessels can move more easily than larger ships.
“Crucially, the LST-100 is not a traditional amphibious warfare ship designed for large-scale assault,” the video stated, adding, “it is a complementary asset providing the essential intratheater logistics and maneuver that enable our larger amphibious fleet to do its job.”
The emphasis on more mobile platforms also comes as the Navy struggles with readiness challenges among its amphibious warfare fleet. A 2025 report found that readiness rates had dropped below necessary levels as maintenance delays and degraded ship conditions reduced the number of ships available for use.
The video nodded to tensions and competition in the littorals of the Indo-Pacific region, where the U.S. has increasingly focused on countering China’s expanding military presence.
The ships, the Marine Corps said, help the force establish a forward presence by getting troops, weapons and supplies on land to land and serve as part of a larger “sea denial strategy.”
From those land bases, American forces can control critical terrain and strike adversarial ships, the service said, to establish deterrence.
Navy leaders in December 2025 approved the ship’s design as part of a wider effort to revamp the Navy’s fleet.
The LSM, the video said, supports the “Golden Fleet” initiative, a concept coined by the Trump administration that centers on massive “Trump-class” battleships that the president announced in December of last year.
The concept, meanwhile, has drawn criticism. Chinese analysts have described the proposed battleships as potential easier targets for anti-ship weapons, and a recent analysis from the Center for Strategic and International Studies questioned the viability of such an idea, citing cost and long development timelines.
Eve Sampson is a reporter and former Army officer. She has covered conflict across the world, writing for The New York Times, The Washington Post and The Associated Press.
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