About this Unit
PHIBCB ONE, or **Naval Mobile Construction Battalion ONE (PHIBCB ONE)**, was established in 1942 as part of the U.S. Navy’s efforts to provide specialized construction capabilities for amphibious operations during World War II. The unit played a critical role in the Pacific Theater, constructing and maintaining essential port and beach facilities to support landing forces during major campaigns. Over the decades, PHIBCB ONE has continued to support U.S. Navy and Marine Corps operations, specializing in ship-to-shore movement of troops, equipment, and supplies. Today, the battalion remains an essential element of the Naval Construction Force, ready to deploy worldwide in support of both combat and humanitarian missions.
Historical Facts
• Legacy of World War II: PHIBCB ONE traces its origins back to the storied Naval Construction Battalions (“Seabees”) that played a vital role in amphibious operations during WWII, laying the foundation for modern amphibious construction units.
• Establishment: Amphibious Construction Battalion ONE (PHIBCB ONE) was officially commissioned on 10 July 1943, making it one of the oldest units of its kind in the U.S. Navy.
• Nickname: The unit is often referred to as “The Fleet’s Workhorse” because of its reputation for handling tough, critical, and rapid construction missions in support of amphibious and expeditionary operations.
• Beach Support: PHIBCB ONE specializes in ship-to-shore logistics, including constructing beach causeways, operating pontoon systems, and establishing beach support areas under combat conditions.
• Korean War Contributions: The battalion played a key role during the Korean War, establishing and maintaining critical beachhead infrastructure during the historic Inchon landings in 1950.
• Vietnam War Operations: PHIBCB ONE supported numerous amphibious landings and logistical missions throughout the Vietnam War, enhancing the Navy’s ability to project power ashore.
• Humanitarian Missions: Beyond combat, PHIBCB ONE has participated in disaster relief, including tsunami response in Southeast Asia and earthquake assistance in Haiti, showcasing its versatility and humanitarian commitment.
• Innovations: The battalion is known for pioneering the use of the Elevated Causeway System (ELCAS), a modular pier that dramatically increases the speed and efficiency of offloading cargo from ships to shore.
• Training and Readiness: PHIBCB ONE regularly participates in major joint and combined exercises, such as RIMPAC and Pacific Partnership, ensuring readiness for both military and civil contingency operations.
• Motto and Emblem: The unit’s motto, “We Build, We Fight,” reflects its dual mission of construction and combat support. Its emblem features the iconic Seabee wielding a hammer and machine gun, symbolizing strength and versatility.
