Shipbuilder Austal USA has started construction on the fourth US Navy’s landing craft utility (LCU) at the company’s Mobile, Alabama, ship manufacturing facility. 
The LCUs are important connectors for the US Navy and US Marine Corps, moving vehicles, personnel and cargo between amphibious assault ships and the shore. 
The vessels have a roll-on / roll-off monohull configuration with hydraulically controlled bow and stern ramps that allow multiple vessels to connect and form a causeway for fast and secure unloading and loading.