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U.S. Navy USS Tripoli Amphibious Ship Leads Indo-Pacific Naval Exercise Formation With Japanese Warships.
USS Tripoli sailed in formation with USS New Orleans, JS Ōsumi, and JS Ise during Exercise Iron Fist in the U.S. 7th Fleet area of responsibility. The group sail highlighted how U.S. and Japanese amphibious forces are sharpening bilateral interoperability for Indo-Pacific contingency and expeditionary operations.
On March 1, 2026, U.S. Indo-Pacific Command highlighted the America-class amphibious assault ship USS Tripoli (LHA 7) sailing in formation during Exercise Iron Fist with USS New Orleans (LPD 18), the Japan Maritime Self-Defense Force tank landing ship JS Ōsumi (LST 4001), and the Hyūga-class helicopter destroyer JS Ise (DDH 182) in the U.S. 7th Fleet area of responsibility. The scene offered a clear illustration of the annual bilateral exercise, which is intended to strengthen operational integration between U.S. and Japanese forces across amphibious, maritime, and expeditionary missions. With Tripoli at the center of the formation during Exercise Iron Fist, the group sail also underscored the growing importance of aviation-capable amphibious platforms in the Indo-Pacific, where allied readiness, mobility, and interoperability remain central to regional contingency planning.
USS Tripoli led a joint U.S.-Japan naval formation during Iron Fist 2026, underscoring expanding allied amphibious interoperability and Indo-Pacific readiness (Picture Source: U.S. INDOPACOM)
The formation brought together a set of platforms that reflects the operational logic of the exercise, but USS Tripoli clearly stood at the center of the naval picture. As an America-class amphibious assault ship, Tripoli is designed to provide a large-deck sea base for expeditionary operations, with a configuration that gives particular weight to aviation support and command functions. That makes the ship especially relevant in a drill such as Iron Fist, where bilateral amphibious coordination depends not only on moving forces by sea but also on sustaining aircraft operations, managing distributed missions, and linking maritime maneuver with actions ashore.
Tripoli’s role is important because Iron Fist 2026 goes well beyond a simple group sail. A U.S. report on the exercise stated that the Tripoli Amphibious Ready Group and the 31st Marine Expeditionary Unit are conducting electronic warfare, air assaults, reconnaissance missions, amphibious craft launch and recovery, and a culminating amphibious assault in Okinawa. In that setting, Tripoli is not just the most visible hull in the formation. It is the platform best suited to support the air-enabled side of amphibious warfare, helping connect aviation, command-and-control, and sea-based force projection in a single ship.
That aviation-heavy profile is what gives USS Tripoli its distinctive value. America-class ships are built to support short takeoff and vertical landing aircraft, helicopters, and other aviation assets required for Marine expeditionary operations, and official Navy reporting from Tripoli’s own command pages shows F-35B Lightning II aircraft operating from the ship’s flight deck during recent 7th Fleet operations. The ship has also been used to host rotary-wing and joint-deck activity involving aircraft such as the AH-64 Apache, UH-60M Black Hawk, HH-60 Pave Hawk, and MH-60S Sea Hawk, illustrating the breadth of flight operations the platform can support. These activities show that Tripoli can conduct or support vertical assault, aviation logistics, reconnaissance support, casualty evacuation, strike-enabled flight operations, and sustained sea-based air activity in support of a larger amphibious force.
For Iron Fist, that matters because the exercise is fundamentally about making allied maritime and amphibious forces work together under realistic conditions. USS New Orleans contributes the transport and lift backbone needed to move Marines, vehicles, equipment, and supporting systems for expeditionary missions, while the Japanese ships bring complementary landing and helicopter-capable functions. But Tripoli remains the centerpiece of the grouping because it is the ship most able to integrate the aviation dimension of the force with broader amphibious command and maneuver. In practice, that makes it a highly relevant platform for a region where operations may have to unfold across dispersed island chains, long maritime distances, and littoral zones requiring rapid reinforcement from the sea.
The Japanese contribution is equally important in understanding the character of the formation. JS Ōsumi and JS Ise were not simply present for a visual demonstration; their inclusion matched the amphibious and maritime profile of the exercise. A tank landing ship and a helicopter destroyer alongside two U.S. amphibious warships create a force package centered on mobility, sea-based support, helicopter operations, and expeditionary coordination. In that sense, the formation photographed on March 1 offered a concise view of the practical military relationship that Iron Fist is intended to strengthen.
The wider geostrategic value of this activity lies in the Indo-Pacific environment in which it took place. The official sources do not use expansive geopolitical language, but the exercise profile itself points to why it matters. In a theater shaped by long distances, island geography, and the need for allied forces to coordinate quickly in contested or austere maritime spaces, a ship like USS Tripoli carries particular weight. Its ability to host advanced aviation operations from the sea gives the U.S. Navy and Marine Corps a flexible forward platform that can support distributed operations, reinforce amphibious forces, and help maintain operational tempo without relying entirely on fixed land infrastructure. That is an analytical reading based on the ship’s design and the exercise mission set, rather than a direct quote from the official captions.
That is also why Iron Fist remains relevant beyond its bilateral symbolism. Allied credibility in the Indo-Pacific is increasingly shaped by demonstrated interoperability rather than declaratory policy alone. A formation built around USS Tripoli, USS New Orleans, JS Ōsumi, and JS Ise showed more than parallel presence at sea. It showed a force mix capable of combining air assaults, reconnaissance, amphibious movement, and command coordination across national lines. For USS Tripoli in particular, the March 1 formation highlighted the role of the America-class assault ship as a central enabler of expeditionary operations, one able to launch, sustain, and coordinate the aviation and amphibious elements that define modern littoral warfare.
Written by Teoman S. Nicanci – Defense Analyst, Army Recognition Group
Teoman S. Nicanci holds degrees in Political Science, Comparative and International Politics, and International Relations and Diplomacy from leading Belgian universities, with research focused on Russian strategic behavior, defense technology, and modern warfare. He is a defense analyst at Army Recognition, specializing in the global defense industry, military armament, and emerging defense technologies.