US Navy accepts delivery of its largest surface vessel with autonomous capability from Austal USA

Austal Limited (Austal) says that Austal USA has delivered Expeditionary Fast Transport USNS Apalachicola (EPF 13) to the United States Navy; the largest surface ship in the fleet with autonomous capability.

Building upon the highly automated hull, mechanical & electrical systems already installed on the Spearhead-class Expeditionary Fast Transport ships, designed by Austal Australia, the Austal USA team (in partnership with L3Harris and General Dynamics Mission Systems) added automated maintenance, health monitoring, and mission readiness to provide EPF 13 with the capability to conduct up to 30 days of operation without human intervention.

Austal Limited Chief Executive Officer Paddy Gregg said the delivery of EPF13 was a real game changer for both the US Navy and broader naval shipbuilding industry - demonstrating a capability to integrate autonomous technology into proven hull designs and create effective unmanned surface vessels.

"EPF13 can operate for up to 30 days without human intervention, which opens up so many opportunities for unmanned missions in various operations, as an autonomous prototype,” Gregg said.

Fundamental to the autonomy effort was Austal USA’s highly automated in-house designed machinery control system (MCS), which allows the ship to be minimally manned by centralising machinery operations to the bridge. All Spearhead-class EPFs built to date incorporate the Austal USA MCS design, which is secure, scalable, distributive, and reconfigurable for multiple propulsion configurations.

EPF 13 went to sea five times over several months in 2022-23, allowing Austal USA and industry partners L3Harris and General Dynamics Mission Systems, to test and analyze not only its typical ship systems, but also the systems resulting from the autonomous design and construction contract modifications required by the US Navy to establish EPF 13 as an autonomous prototype.

Austal USA President Rusty Murdaugh said: “Austal USA is proud to deliver this ship to our Navy – it’s innovative and is going to be a critical asset as unmanned capabilities continue to push boundaries and redefine how missions are achieved. A lot of capability is being delivered to our warfighters with this ship and I’m incredibly proud of our team of shipbuilders.”

EPF 13 is the first Expeditionary Fast Transport vessel to be delivered to the Navy with enhanced capabilities to support V-22 flight operations and launch and recover 11 metre RHIBs. These upgrades, along with EPF’s proven high-speed, maneuverability and shallow water access are key enablers for support of future United States Navy Expeditionary Advanced Base Operations around the world.

Autonomous vessel capability has been identified as an area of strategic importance by the US Navy. Austal USA is working to advance autonomous capability and is partnered with L3Harris on the MCS upgrade of Overlord vessel, Mariner (OUSV 3), and construction of Vanguard (OUSV 4), and with Saildrone, Inc. on the manufacture of Surveyor unmanned surface vehicles. Combined with investments from academia in uncrewed technology, south Alabama is quickly becoming the epicenter of autonomous naval architecture.