When World War II broke out the United States Naval Construction Battalions (Seabees) did not exist. The logistics of a two theater war were daunting to conceive. Rear Admiral Moreell completely understood the issues. What needed to be done was build staging bases to take the war to the enemy, across both oceans, and create the construction force to do the work. Naval Construction Battalions were first conceived at Bureau of Yards and Docks (BuDocks) in the 1930s. The onset of hostilities clarified to Radm. Moreell the need for developing advance bases to project American power. The solution: tap the vast pool of skilled labor in the U.S. Put it in uniform to build anything, anywhere under any conditions and get the Marine Corps to train it. The first volunteers came skilled. To obtain these tradesmen, military age was waived to age 50. It was later found that several past 60 had managed to get in. Men were given advanced rank/pay based upon experience making the Seabees the highest paid group in the U.S. military. The first 60 battalions had an average age of 37.
Naval Advance Base Espiritu Santo or Naval Base Espiritu Santo, most often just called Espiritu Santo, was a major advance Naval base that the U.S. Navy Seabees built during World War II to support the Allied effort in the Pacific. The base was located on the island of Espiritu Santo in the New Hebrides, now Vanuatu, in the South Pacific. The base also supported the U.S. Army and Army Air Corps, U.S. Coast Guard, and US Marine Corps. It was the first large advance base built in the Pacific. By the end of the war it had become the second-largest base in the theater. To keep ships tactically available there was a demand for bases that could repair and resupply the fleet at advance locations, rather than return them to the United States. Prior to December 7th, Pearl Harbor was the U.S. fleet's largest advance base in the Pacific. Espiritu became capable of all aspects necessary to support the Fleet's operations from fleet logistics in fuel, food, and ammunition, to transport embarkation for combat operations or returning to the continental United States. The ship repair facilities and drydocks were capable of attending to most damage and routine maintenance. Had it not existed, ships would have had to return to Pearl Harbor, Brisbane, or Sydney for major repairs and resupply. The base became a major R and R destination for the fleet.
Naval Base Ulithi was a major United States Navy base at the Ulithi Atoll in the Caroline Islands in the western Pacific Ocean, to the north of New Guinea during World War II. The base was built to support the island-hopping Pacific war efforts of the allied nations fighting the Empire of Japan. In terms of the number of ships at one base, Naval Base Ulithi was the largest Naval Base in the world in 1944 and 1945, with over 600 ships at times.
Naval Base Saipan or Naval Advance Base Saipan or Naval Air Base Saipan was a United States Navy Naval base built during World War II to support Pacific Ocean theater of war and the many warships and troops fighting the war. The base was on the island of Saipan in the Northern Mariana Islands. The base was part of the Pacific island hopping campaign. The base construction started after the Battle of Saipan ended on July 9, 1944. US Naval Advance Base Saipan was constructed by the Seabees Naval Mobile Construction Battalions. The base was under the Commander Naval Forces Marianas. Saipan is 12 miles (19 km) long and 5 miles (8.0 km) wide. About 70% of the island was sugarcane cultivation at the start of the base construction. At the start of the Battle of Saipan, the island's population had about 30,000 Japanese troops and about 20,000 Japanese civilians. The city of Garapan was the administrative center for the Saipan governmental district.
Naval Base Noumea was a major United States Navy sea and air base at Nouméa, New Caledonia. Naval Base Noumea was built at Noumea Harbor. Noumea was picked for a Naval Base as it was beyond the range of Japanese land-based planes. Noumea is on the east side the Coral Sea, 1,469 km, from Brisbane, Australia. The Base was built during World War II to support the many ships and aircraft fighting and patrolling in the South West Pacific theatre of war as part of the Pacific War. Naval Base Noumea had anchorage for large ships. Noumea was protected against submarine attack by ring of islands and Naval minefields. At its peak 50,000 Troops were stationed at Naval Base Noumea. New Caledonia has been a colony of France since 1853. Noumea is the capital City of New Caledonia on the southwest end of the island. On November 8, 1942, US Navy South Pacific headquarter moved to Noumea.
Naval Base Milne Bay, also called Naval Advance Base Milne Bay, was new major United States Navy sea and airbase base built on Milne Bay in Milne Bay Province in south-eastern Papua New Guinea. By spring 1943, the build up of the US Navy to support the Pacific War had caused overcrowding at the ports on the east coast of Australia. To help, Seabees departed Naval Base Brisbane on June 19, 1943 to set up a new base in Milne Bay. Naval Base Milne Bay headquarters was at Ladava Navy Base. The Royal Australian Navy already had a small base in Milne Bay: HMAS Ladava. Australians were able to defend and keep Milne Bay in the Battle of Milne Bay in 1942. Naval Base Milne Bay was built during World War II to support the many ships and aircraft fighting and patrolling in the South West Pacific theatre of war. Ladava Navy Base provided a large protective US Navy fleet anchorage at Gahora Bay next to Ladava. At Naval Base Milne Bay, Seabees built a large Naval facility.
Naval Base Okinawa, now Naval Facility Okinawa, was and is a number of bases built after the Battle of Okinawa by United States Navy on the Okinawa Island of Japan. The naval bases were built to support the landings on Okinawa on April 1, 1945, and the troops fighting on Okinawa. The Navy repaired and did expansion of the airfields on Okinawa. United States Navy Seabees built or repaired the facilities on the island. The bases on Okinawa put the United States Armed Forces only 350 miles from Japan's home islands. Most facilities closed after the war, but some are still in use today in all branches of the United States Armed Forces.
Manus Naval Base was a number of bases built after the World War II Battle of Manus by United States Navy on the Manus Island and a smaller island just east, Los Negros Island in the Admiralty Islands chain. The major naval base construction started with the Los Negros landings on February 28, 1944. The Navy repaired and did the expansion of the airfields on the Admiralty Islands. United States Navy Seabee built or repaired the facilities on the islands. The large Manus Naval Base, also called the Admiralty Island base, supported United States Seventh Fleet, Southwest Pacific command, and part of the Pacific Fleet. The base was abandoned by the US Navy after the war.
Naval Base Brisbane was a major United States Navy base built in the early part of World War II at Brisbane, Queensland, Australia. At first, operated as a base for patrol aircraft and convoy escort aircraft to protect the last leg of the Pacific War to the Southwest Pacific. As the US Navy expanded in the island hopping campaign, Naval Base Brisbane expanded to include a submarine base, repair depot, seaplane base and other facilities. US Navy operations started on April 14, 1942, and ended after the war in 1945.
Banika Field was a World War II airfield on Mbanika in the Russell Islands in the Solomon Islands. Banika Field was built and supported by Naval Base Banika Island.
Naval Base Puerto Princesa, Naval Base Palawan, was a United States Navy base built during World War II at Puerto Princesa on Palawan Island, Philippines, after the Invasion of Palawan on February 28, 1945. Puerto Princesa Bay offered an excellent base for fleet anchorage. At the naval base, US Navy Seabees built: a seaplane base, carrier aircraft fighter plane repair depot, land airfield and other base facilities.
Naval Base Lingayen was a United States Navy base built during World War II at Lingayen Gulf on the northwestern Island of Luzon in the Philippines. The base was founded after the Invasion of Lingayen Gulf on January 9, 1945 at Lingayen city and the surrounding gulf. The Naval base was used to support the later operations at Manila and the rest of Luzon Island and then at Okinawa. Lingayen Gulf offered excellent fleet anchorage.
Naval Base Upolu was a naval base built by the United States Navy in 1942 to support the World War II effort. The base was located on Upolu Island, Samoa in the Western Pacific Ocean, part of the Samoan Islands's Naval Base Samoa. After the surprise attack on Naval Station Pearl Harbor on December 7, 1941, the US Navy was in need of setting up more advance bases in the Pacific Ocean. At Naval Base Upolu the Navy built a sea port, an airbase and a seaplane base.
Naval Base Tarawa was a naval base built by the United States Navy in 1943 to support the World War II effort. The base was located on Tarawa atoll in the Gilbert Islands in the Central Pacific Ocean. The base was built as one of many advance bases in the island-hopping campaign towards the Empire of Japan. At Naval Base Tarawa the Navy built a seaport, seaplane base and two airbases. Construction started after the Battle of Tarawa ended November 23, 1943, part of Operation Galvanic.
Naval Base Fiji was a naval base built by the United States Navy in 1942 to support the World War II effort. The base was located on Fiji in the Central Pacific Ocean. The base was built as one of many advance bases in the island-hopping campaign towards the Empire of Japan. The US Navy built seaports, seaplane bases and airfields used for staging in the Pacific War.
Naval Base Kwajalein was United States Navy base built on Kwajalein Atoll, in the Marshall Islands to support the World War II efforts in the Pacific War. The base was built after the Battle of Kwajalein ended 3 February 1944. The US Navy built airfields, a seaport and a craft repair depot on the captured islands. The base was part of the vast Naval Base Marshall Islands.
Naval Base Majuro was a major United States Navy base built on Majuro Atoll, in the Marshall Islands to support the World War II efforts in the Pacific War. The base was built after the Battle of Majuro-Kwajalein ended 3 February 1944. Majuro was found to be unoccupied and abandoned when the United States Army arrived. The US Navy built airfields, seaport, and other facilities on the captured islands. The base was part of the vast Naval Base Marshall Islands.
US Naval Base Solomons was a number of United States Navy bases in the Solomon Islands in the Pacific Ocean. Most were built by the US Navy Seabees, Naval Construction Battalions, during World War II as part of the Pacific War. In August 1942 the United States Armed Forces took the Guadalcanal in the Solomon, in the Battle of Guadalcanal. US Navy Seabees built a new base at Guadalcanal, Naval Base Guadalcanal and then on other islands in the Solomons.
Naval Base Eniwetok was a major United States Navy base at the Eniwetok Atoll in the Marshall Islands in the western Pacific Ocean, just to west of the International Date Line, during World War II. The base was built to support the island hopping Pacific war efforts of the allied nations fighting the Empire of Japan. In 1944-5 it was one of the busiest naval bases in the world with over with over 488 ships.
Naval Base Samoa, codename Operation Straw, was a number of United States Navy bases at American Samoa in the central Pacific Ocean. The bases were used during World War II to support the island hopping Pacific war efforts of the allied nations fighting the Empire of Japan.
United States Navy 
