banner image


Battle E
Contact Us
THIRTIETH Naval Construction Regiment
1436 Pacific Road
Port Hueneme, CA  93043-4301

Naval Construction Battalion Center - Port Hueneme


The Thirtieth Naval Construction Regiment was first established in 1944, on Saipan after the invasion of Tinian. The regiment moved to Marianas and was known as the “Airfield Construction” Regiment of the Sixth Naval Construction Brigade.

Elements of different Battalions assigned under the regiment landed with the assault units of the 4th Marines for the invasion of Tinian. The initial invasion tasking was rebuilding a captured Japanese airfield for use by Naval aircraft, construction for roads, water facilities, camp hospitals, tank farms, ship moorings, pipelines, and drainage and sanitation lines.

The construction of North Field from which B-29 bomber strikes were launched against the islands of Japan kept the Regiment battalions busy from November 1944 to May of 1945, and it was inactivated on Tinian, Marianas in October 1945.

Two years later, they were reactivated in Guam, taking over the duties that had been assigned to the Fifth naval Construction Brigade.

The regiment was under the administration and operational control of Commander, U.S. Naval Forces, Marianas, and assigned control of Naval Construction Battalion 103 and Construction Battalion Detachments on Peleliu, Saipan, Kwajalein, Midway, and Johnston Island.

CB Dets served at various times on Okinawa, and worked at Sangley Point Naval Air Station and Subic Bay Naval Operating Base in the Philippines.

The Thirtieth Regiment was transferred from Guam, Mariamas to Cubi Point, Luzon, Philippine Islands in March of 1952. The regiment absorbed the Philippine Naval Construction Regiment whose Commanding Officer became the Commanding Officer of the Thirtieth Regiment.

The regiment’s mission was to act as the single director of both Naval construction forces and civilian contractor forces in the construction of the U.S. Naval Air Station Cubi Point, a task that lasted five years. During the five-year project, the regiment employed Mobile Construction Battalion TWO, THREE, FIVE, NINE and ELEVEN; Construction Detachments 1802 and 1803; and Detachment A of the Tenth Brigade.

Naval Construction Forces were utilized only during the September – June dry construction season. A large part of the airfield and air station facilities were constructed by contractors, but Seabees did all the earth moving – over twenty million cubic yards of dirt – constructed many of the stations auxiliary facilities, and assisted in dredging operations for waterfront facilities.

The regiment operated under the military and operational control of Commander, Naval Forces, Philippines and administrative control of the Director, Pacific Division, Bureau of Yards and Docks, until 1955. In 1955, the Tenth Naval Construction Brigade was activated at Pearl Harbor and assumed administrative control of the regiment.

Jumping ahead ten years, on 10 May 1965, the Thirtieth Naval Construction Regiment was activated at DaNang, Republic of Vietnam (RVN), under the Commander, Naval Construction Battalions, U.S. Pacific Fleet.

Its principle mission was to exercise operation control over mobile construction battalions deployed to Vietnam. It maintained liaisons with other military commands, assigned construction projects to Seabee units, and monitored performance. On 1 June 1966, the Thirtieth Regiment was assigned to report to the newly established Third Naval Construction Brigade in Saigon. December of 1969, having completed most Seabee construction projects in Vietnam, the Thirtieth Regiment was re-deployed to Okinawa.

The Thirtieth Naval Construction Regiment, headquartered on Okinawa, exercised command over all Seabee battalions in the Western Pacific Ocean area outside of Vietnam. It also directed the activities of Seabee teams deployed to the Western Pacific. In September of 1973, the headquarters of the Thirtieth NCR was moved to its birthplace of Guam, Marianas. From Guam, the Thirtieth directed the activities of the mobile construction battalions that built the major air and Naval base at Diego Garcia, British Indian Ocean Territory, between 1971 and 1982. On 15 August 1984, the Thirtieth NCR was disestablished on Guam.

The Thirtieth NCR was reactivated in July 1982 with headquarters at Pearl Harbor, Hawaii. Overseas tasking in the Pacific arena included work in our two mainbody sites of Guam and Okinawa, as well as detachment sites in Diego Garcia, Adak, Korea, Hawaii, Sasebo, Iwakuni, Yokosuka, Fuji, Atsugi, and the stateside tasking in Southern California. In addition to the normal active duty battalion contribution, reserve battalions contributed 45,000 man-days of support construction effort into CINCPACFLT Bases, USMC activities and Naval Reserve Centers.

The Thirtieth NCR, NMCB 1, NMCB 40, and ACB 1 completed tasking in Somalia during Operation Restore Hope in 1993. Primary tasking was to provide vertical construction support to U.S. and Coalition Forces, who would establish base camps at each of the humanitarian relief sites. Repair and improvement of the main supply routes was another big part of our effort. The largest project was at the Baldoa Airstrip, which deteriorated as C-130 relief flights increased in the early part of the operation. ACB 1 provided construction support and fuel and water offload service at the port of Mogadishu.

In January 2003, the Thirtieth NCR deployed to Southwest Asia in support of Operations Enduring Freedom and Iraqi Freedom. During conflicts in support of OIF, the Regiment was Task Organized as Task Force Mike (mobility) and designated the Main Effort for all NCF in theater. The Regiment supported FIRST Marine Expeditionary Force with non-standard bridging and general engineering support for its involvement in OIF, Thirtieth Naval Construction Regiment received the Presidential Unit Citation.

After massive tsunamis devastated portions of South Asia and Africa in December 2004, Naval Mobile Construction Battalions SEVEN and FORTY and Underwater Construction Team TWO deployed to the area to support humanitarian relief efforts.

On the homefront, Naval Mobile Construction Battalion 40, Underwater Construction Team 2, and Seabees from Construction Battalion Maintenance Unit 303 detachments provided immediate relief to the Gulf Coast following Hurricane Katrina in August 2005.

The 30th Naval Construction Regiment deployed to Iraq to support the 2nd Marine Expeditionary Force (II MEF) from March 2005 to March 2006, and was heavily involved in building Iraqi Security Force basing and improving quality of life and force protection throughout the country.

In July, 2006, the 30th NCR relocated to Construction Battalion Center, Naval Base Ventura County in Port Hueneme, Calif., to provide better command and control of its units.

Today, more than 2,700 active duty and 5,700 reserve officers, men and women are assigned to the Pacific Fleet Seabees. Construction tasks in the Pacific range from renovating living quarters, ports and airfields, to constructing major operational training and support facilities.

Disaster relief and helping others help themselves have always been part of the Seabee tradition. Seabees provide relief after natural disasters, which includes providing temporary berthing and utilities, cleaning debris, restoring communication systems, repairs to damaged homes, buildings and base structures.

The “Can Do” spirit of the Seabees has a long and gallant history. The Seabees of today uphold that legacy and continue to be the military construction force of choice.


 Seabee News

Quick Links

US Navy Recruiting | No Fear Act | FOIA |

US Navy | US Marine Corps | Navy Reserves

Individual Augmentee | Section 508 / Accessibility

This is an official United States Navy Website.

This US Government system is subject to monitoring. Please review the Privacy Policy.
The appearance of external hyperlinks does not constitute endorsement by the United States Department of Defense, or the United States Department of the Navy  of the linked web sites, or the information, products or services contained therein. For other than authorized activities such as military exchanges and Morale, Welfare and Recreation (MWR) sites, the United States Department of Defense, the Department of the Navy  does not exercise any editorial control over the information you may find at these locations. Such links are provided consistent with the stated purpose of this DoD web site.