Assault Craft Unit 1
| Assault Craft Unit ONE | |
|---|---|
| Active | 01 June 1943 - Present |
| Country | United States |
| Branch | USN |
| Garrison/HQ | NAB Coronado |
| Nickname(s) | Surf Riders |
| Motto(s) | "Initiative, Dependability, Cooperation" |
| Engagements | World War II Korean War Vietnam War Operation Desert Storm Operation Iraqi Freedom War on Terror |
| Commanders | |
| Current commander | CDR M. J. Blomberg |
Assault Craft Unit ONE, (ACU-1) is a Pacific Ocean Maritime Prepositioning Force in the United States Navy operated under Naval Beach Group ONE out of Naval Amphibious Base (NAB) Coronado with a Forward Detachment in Sasebo, Japan. ACU-1's force consists of Landing Craft Utility (LCU) boats, Landing Craft Mechanized (LCM), Mark 8 boats , and Maritime Prepositioning Force Utility Boats (MPFUBs) . The sister unit of ACU-1 is Assault Craft Unit 2 in Naval Amphibious Base Little Creek, Virginia.