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LCAC stands for Landing Craft Air Cushion, a type of amphibious landing craft used by the United States Navy and Marine Corps to transport troops, equipment, and supplies from ship to shore. The LCAC is designed to operate in a variety of conditions, including rough seas, surf, and shallow water, and is capable of carrying up to 75 tons of cargo or 180 fully equipped troops.
The LCAC uses a cushion of air to float on the surface of the water, which reduces drag and allows it to travel at high speeds over both water and land. The craft is propelled by four gas turbine engines, which power four propellers that can be adjusted to steer the craft.
The LCAC was first introduced in the 1980s and has since undergone several upgrades and modifications. It has been used in a number of military operations, including the Persian Gulf War, the Iraq War, and the War in Afghanistan. The LCAC is also used in humanitarian missions and disaster relief efforts, such as after Hurricane Katrina in 2005.
The LCAC is an important part of the U.S. military's amphibious assault capability, allowing troops and supplies to be quickly and efficiently transported from ships to shore. It is operated by specially trained crews and can operate in a variety of environments, making it a valuable asset in a range of military and humanitarian operations.