THE US Marine Corps has accepted the first prototype of a new Australian-designed ancillary surface craft (ASC), marking a significant milestone in efforts to improve logistics and sustainment operations across contested maritime environments in the Indo-Pacific.
The prototype was delivered to the Marine Corps Warfighting Laboratory (MCWL) after being built by Birdon America under a rapid acquisition program designed to accelerate development and testing of new capabilities for Expeditionary Advanced Base Operations (EABO).
The approximately 46metre (150-foot) roll-on/roll-off vessel has been developed to bridge what the Marine Corps describes as the "last tactical mile", transporting personnel, fuel and equipment directly to austere shorelines without the need for ports, piers or other established infrastructure.
Designed for operations in complex littoral environments, the craft is capable of carrying up to 46 tonnes of cargo and 40 combat-loaded Marines. It can operate in rough conditions, while advanced forward-looking sonar enables navigation in shallow and unsurveyed coastal waters.
MCWL maritime program manager Aaron Hatfield said technical acceptance represented an important step before operational testing begins.
"Achieving technical acceptance is a crucial first step in our rigorous testing regimen," Mr Hatfield said.
"This validation assures that the craft's advanced systems and robust design are ready for MCWL to begin hands-on technical experimentation, ensuring we can meet the extreme operational demands of the Indo-Pacific theatre."
Following acceptance, the vessel will enter a series of limited technical assessments involving Birdon America engineers and operators, Australian Army crewing support and MCWL personnel.
The collaboration highlights growing defence cooperation between the United States and Australia as both nations pursue force modernisation programs focused on distributed maritime operations across the Indo-Pacific.
According to the Marine Corps, the ASC is intended to complement the future Landing Ship Medium (LSM) fleet rather than replace it. While the larger LSM will move forces between islands, the ASC has been specifically designed with an extremely shallow draft to deliver supplies directly from offshore staging areas to remote beach landing sites.
MCWL Science and Technology Division director Colonel Kenny Jones said the prototype would allow the Marine Corps to refine future requirements for expeditionary maritime logistics.
"To support Expeditionary Advanced Base Operations, our forces must remain highly mobile and sustained without relying on fixed, vulnerable ports," Mr Jones said.
"This prototype allows MCWL to immediately execute hands-on experimentation, test tactical concepts and put real hardware in the hands of Marines."
The craft will initially operate with a hybrid crew consisting of Marines and contracted mariners as the Corps develops its own small-vessel operating capability.
While logistics and mobility remain the primary mission, future testing phases will also assess force-protection and self-defence options to improve survivability in contested environments.
The acceptance comes as the US and Australia continue to deepen cooperation on naval expeditionary warfare, with the upcoming assessments providing another practical demonstration of allied efforts to develop new logistics capabilities suited to operations across the Indo-Pacific's vast island chains.