On 1 February 1986, ASSAULT CRAFT UNIT FOUR was commissioned in Panama City, FL. On 18 March 1987, ACU4 accepted delivery of the Atlantic Fleet’s first LCAC. Designed to operate from every well deck configured amphibious ship, the LCAC’s main mission is to deliver a 60-ton payload to a designated beachhead at speeds in excess of 35 knots. Combining high speed, exceptional maneuverability, and long-range qualities with the ability to travel over land, the LCAC provides added versatility to our Amphibious Forces. This is the DET-ALPHA patch for ACU-4 and does not have velcro attached.