Geography | |
---|---|
Location | Pacific Ocean |
Coordinates | 26°28′46″N127°55′40″E / 26.47944°N 127.92778°E |
Archipelago | Ryukyu Islands |
Area | 1,199 [1] km2 (463 sq mi) as of 1 October 2018 [2] |
Length | 106.6 km (66.24 mi) |
Width | 11.3 km (7.02 mi) |
Highest elevation | 503 m (1650 ft) |
Highest point | Mount Yonaha |
Administration | |
Location | Okinawa Island |
Naval Base Administrative | United States Navy 1945–present (USMGR 1945–1950, USCAR 1950–1972) |
Founded after | Battle of Okinawa |
Demographics | |
Population | Peak of over 545,000 US Troops in 1945 (12,000 killed) |
Naval Base Okinawa, now Naval Facility Okinawa, is a number of bases built after the Battle of Okinawa by United States Navy on Okinawa Island, 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 by all branches of the United States Armed Forces. [3] [4]
Construction and improvements to captured facilities were given to Navy Seabee construction brigades 8th, 10th, 70th and 11th. The 1181st US Army Engineer construction joined in the construction projects. Some construction brigades came ashore during the landings as support combat engineers. As soon as the beaches were secured, the construction brigades began fixing and improving beach exit roads and bridges. Construction brigades were given the dangerous task of clearing land mines and demolitions. The other high priorities for the Construction brigades were fresh water and the repair and expansion of the airfields on Okinawa, once they were captured. Construction brigades worked in shifts around the clock, due to the high priorities of these tasks. Seabee 43rd Naval Construction Regiment landed with the troop on the east coast of Okinawa. The next Seabee landings were the 36th, 40th, and 87th Seabee Battalions in late April from Naval Base Saipan on LST ships. Seabees built their own loading zone for the heavy equipment needed for road work and runway repair and improvement. Heavy rains sometimes slowed and stop the work. Work on Yontan Airfield and Kadena Airfield started on April 3, both were ready the next day by the efforts of 1901st Aviation Engineer Battalion and Seabee 624. The repaired runways were used by fighter aircraft and reconnaissance aircraft. Seabees added a tank farm for fuel storage. On April 28, Seabee started construction of new runway that could handle the needs of Bombers at Yontan Airfield. There were now 95,000 construction troops on Okinawa, improving and building facilities. Next repair and improvement started at Bolo Airfield and Yonabaru Airfield. When completed Yonabaru Airfield was 6,500 feet long. Due to poor drainage at Awase Airfield, the captured runway was abandoned, for later work. From June 15 to Awase Airfield completion on June 30, Seabees did massive earthwork project to drain and fill the Awase runway. Awase Airfield became a fighter aircraft base. Seabee 36th Battalion began building a new 5,000-foot fighter aircraft runway nearby to Awase starting on April 23. On May 6 Seabees of the 40th Battalion began the repair and improvement of the Chimu Airfield. On the Katsuren Peninsula at Katchin Hanto Seabees of the 7th Battalion started work on a seaplane base, that opened on July 1. Also at Katchin Hanto Seabees built a large supply depot. [5] For unloading all the needed cargo harbor facilities at Katchin Hanto, Tengan and Baten Ko at Buckner Bay were built. At Tengan a breakwater and pier was built. A number of anchored pontoon piers and causeways were built to get over the coral reefs. Seabees used many tugboats and barges to get cargo ashore. Most ships could not get to pontoon causeways, so ships would unload into barges, barge cargo was then loaded into trucks. Additional piers and causeways were built at City of Kin on Chimu-Wan Bay, Awase, Machinato, Chimu Wan, Yonabaruand, City of Kuba Saki and Bisha Gawa. Unten Ko on Motobu Hanto and Chimu Wan became a supply depot with boat repair, naval mine depot. Each depot has an ammunition depot outside of the main depot. A ship repair depot was established at Baten Ko. Buckner Bay and Chimu Wan became massive supply depots. Port at Awase became an aircraft repair depot, with the docking of aircraft repair ships and Combat Aircraft Service Unit. [3]
On June 1, 1945, the original Seabees Battalion were given a break as replacements arrived and took over unloading the massive amount of cargo still needed for operation. The new units were: Seabee 3rd, 4th, 11th, 12th, 23rd, 27th, and 36th Special Battalions, the Seabee 81st, 28th, and 148th Pontoon Battalions, and the Seabee 137th and 139th Trucking Battalions. June rain slowed the supply chain on muddy roads, priority cargo was unloaded first due to this slow down. Okinawa Island was declared secured on June 22, 1945. By July 1 supply chain problems were gone. Seabee also built the Third Amphibious Corps evacuation hospital at Yontan and Special Augmented Hospital 3, 4, 6 & 7. Seabee built degaussing station at Tsuken Shima, and a joint Headquarter communications center. All this work was interrupted from the landing to victory by air attacks, troops and Seabee were bombed, strafed and Kamikaze attacked on ships. On the ground, sniper fire, artillery, mortar fire, land mines and booby traps were a constant danger for work crews. Seabee repaired the remaining airfields at Ie Shima Airfield, Futema Airfield, Machinato Airfield and Tsuken Shima Airfield. By August, the troops peaked at 87,000 construction and engineering troops on Okinawa in 36 naval construction battalions, 21 Army engineer aviation battalions, 14 Army combat engineer battalions, and 7 Army engineer construction battalions. [3]
More than 12,000 US Troops died during the fighting on Okinawa. [6] The Okinawa Bases were building up for the planned, more costly, invasion of Japan home island, called Operation Downfall. With the Surrender of Japan on September 2, 1945, the invasion was not needed. The Navy cleared naval mines around Okinawa waters in Operation Zebra. The Pentagon decided to keep Okinawa Bases as an Naval Advance Base. Seabee projects that were planned continued after the surrender of Japan. These projects included a full naval base at Baten Ko, camp for receiving troops at Kuba Saki, camp for outgoing troops, new ammunition depot, Fleet Hospital #116, a small naval base at Katchin Hanto, full aviation supply depot, making a deep harbor at Baten Ko, building a fleet recreation area at Tsuken Shima, and enlarging the naval supply depot at Tengan on Chimu Wan. On September 1, 1945, the agreement between the US Army engineer and the Seabee ended. Before this time both operated under a single command. This ended the largest ever joint construction force assembled. On October 9, 1945, the south part of Okinawa Island was hit by a typhoon, Typhoon Louise. Typhoon Louise did massive damage to the fleet post office at Baten Ko, departure camp, and Special Augmented Hospital No. 4, along with general damage across the southern bases. The typhoon did more damage to vessels than the air attacks. [7]
At the end of construction in late 1945, The US Navy bases and facilities covered 20,000 acres. Construction crews had built for both the naval and army use: 4,180 feet of wharves, 712,000 square feet of storage depot buildings, 193,000 cubic feet of refrigerated storage and 11,778,000 square feet of open storage. Seabee had built tank farms holding: 8,820,000 gallons of aviation gasoline, 30,000 barrels of Diesel fuel, 50,000 barrels of fuel oil. Always built outside of camp and other depots Seabee built 13,000 square feet for ammunition storage. At the airfields, 324,100 square feet of buildings were built for aviation repair shops and 91,000 square feet for general repair shops. The Hospitals took up 338,000 square feet. For the troops, 4,755,000 square feet of barracks were built. The US Navy's share of the space was: 16,700 square feet of supply depot and 7,475 cubic feet of refrigerated storage, and 4,500 square feet of open storage, 2,400 square feet of hospital and 67,692 square feet of barracks. The Seabee had a 5,500 square feet repair shops. [3]
Japanese prisoner of war camps were built to house the 11,250 Imperial Japanese Army troops that surrendered between April and July 1945. The 11,250 Troops, which included 3,581 unarmed laborers, made up 12 percent Troops Japan had placed on the island. Some of the Troops that surrendered were home guard personnel called Boeitai . The camps held the POWs until repatriation to the Japanese homeland on US Navy ships. [8]
United States Military Government of the Ryukyu Islands was set up during the battle in 1945 for Administrative control. In 1950, United States Civil Administration of the Ryukyu Islands was set up Administrative control. In 1972, Administrative control was returned to Japan. [9] [10]
United States Forces Japan was founded in 1957 for the defense of Japan. [11] [12]
Naval Forces Japan (United States) was founded in 1962 and has control over all United States Navy shore installations in Japan. [13] [14] [15]
Japanese governments has allowed US bases on Okinawa in exchange for a US commitment to defend Japan from external attacks, called The U.S.-Japan Security Alliance. [16]
Naval Facility Okinawa [17]
Built at Okinawa: [3]
Naval Base Okinawa became a major repair base, ships and other equipment had been fighting in the war for some time, or damaged in kamikaze attacks and were in need of repair. In addition to the land-based repair shops and depots, repair ships worked at Okinawa. Aircraft repair ship, repair ship and floating docks were used to do maintenance, some based at Kerama Islands:
Construction crews, both Navy and Army improved the airfields on the island. After Seabee construction, four airstrips were turned over to the US Army. But were used by Naval Air Transport Service and Navy patrol planes also. [32] [33] [34]
Both US Navy and World War II United States Merchant Navy ships unload massive amounts of cargo and fuel needed to build and operate the Okinawa Bases. [37] SS Canada Victory, SS Hobbs Victory, SS Logan Victory each an ammunition ship, were attacked and sank with an explosion after kamikaze attack in 1945 at Okinawa. The loss of the three Victory ships, each sunk by a kamikaze attack severely hurt the combat forces on Okinawa. The ships were carrying a total of 24,000 tons (54 million pounds) of ammunition; including most of the 81 mm mortar shells needed for the troops. [38] The Victory ships were some of 47 ships sunk by kamikaze attack during World War II. [39] [40] The ammunition ship SS Saginaw Victory arrived April 12, 1945, at Okinawa to replace the ammunition lost on the ships. More ammunition ships were not needed, as the war came to an end without the invasion of Japan. [38] The SS Sharon Victory delivered C-rations to the troops on Okinawa, during unloading came under attack. Sharon Victory fought off a Japanese kamikaze plane attacking the ship. [41]
Chimu Airfield or NAB Chimu is a former World War II airfield on the Pacific coast of Okinawa. The airfield was inactivated after October 1945.
Awase Airfield or NAB Awase is a former World War II airfield on the Pacific coast of Okinawa.
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.
US Naval Advance Bases were built globally by the United States Navy during World War II to support and project U.S. naval operations worldwide. A few were built on Allied soil, but most were captured enemy facilities or completely new. Advance bases provided the fleet with support to keep ships tactically available with repair and supply depots of facilities, rather than return them to the continental United States. Before Japan declared war on the United States the U.S. Navy had a single fleet-sized advanced base in the Territory of Hawaii at Naval Station Pearl Harbor. During the war the U.S. Navy Seabees built over 400 advance bases categorized by size. Naval bases were either Lions or Cubs while airfields were either Oaks or Acorns. Lions and Oaks were major facilities while Cubs and Acorns were minor. PT Boats typically would get a Cub and airfields with single runways were Acorns. The larger bases could provide refueling and overhaul; loading of troopship and cargo ships; and preparing amphibious assault ships. Some became major repair depots. The Seabees developed auxiliary floating drydocks were able to repair battle damage and do regular maintenance in the field saving ships trans-pacific trips for repair. A few bases also were developed to be R and R for all U.S. personnel. Most Advance Bases were built by the US Navy's Seabees in Naval Construction Battalions (CBs). At the start of the war civilian contractors were employed in construction. The Seabees in World War II built most of the airfields used by the United States Army Air Forces and United States Marine Corps, as they had the ships and cranes needed to transport the vast amount of equipment needed at the advance bases. The US Army and United States Coast Guard also operated out of many of these facilities. Seabees could build new or repair damaged runways, and with advancements in heavy bomber technology lengthen runways as needed. A few Naval Advance Bases were built for the Korean War and Vietnam War.
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 of the Coral Sea, 1,469 kilometres 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 an anchorage for large ships. Noumea was protected against submarine attack by a 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. Nouméa is the capital city of New Caledonia. On November 8, 1942, US Navy South Pacific headquarters moved to Nouméa.
Peleliu Naval Base was a major United States Navy sea and airbase base on Peleliu island, one of sixteen states of Palau. The United States Marine Corps took the island in the Battle of Peleliu during World War II. Battle of Peleliu was a costly conflict that started September 15, 1944, and ended November 27, 1944. On September 30, 1944, Peleliu is declared occupied. The taking of Peleliu and Morotai gave the sea and air protection needed for the later invasion of the Philippines. US Navy Seabee built a number of facilities at Peleliu Naval Base.
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 Manila, Naval Air Base Manila was a major United States Navy base south of the City of Manila, on Luzon Island in the Philippines. Some of the bases dates back to 1898, the end of the Spanish–American War. Starting in 1938 civilian contractors were used to build new facilities in Manila to prepare for World War II. Work stopped on December 23, 1941, when Manila was declared not defendable against the Empire of Japan southward advance, which took over the city on January 2, 1942, after the US declared it an open city. US Navy construction and repair started in March 1945 with the taking of Manila in the costly Battle of Manila ending on March 2, 1945. Naval Base Manila supported the Pacific War and remained a major US Naval Advance Base until its closure in 1971.
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.
Naval Base Woodlark Island was a United States Navy base built during World War II on Woodlark Island on Papua New Guinea. The US Navy built a PT boat base, boat repair depot, and harbor facilities at the city of Guasopa to support the Pacific War in 1943. The Harbor facilities was also built to support the US Navy in building the Narewa Airfield on the island. The base was part of the New Guinea campaign.
Naval Base Finschhafen was a United States Navy base built during World War II at Finschhafen on the Huon Peninsula in Morobe Province of Papua New Guinea. The US Navy built a PT boat base, Dreger Harbor PT Boat Base, boat repair depot, and harbor facilities at Dreger Harbour and Langemak Bay to support the Pacific War in 1943. Harbor was also built to support the US Navy in building 6,000-foot Finschafen Airfield, also called Dreger Field, now Finschhafen Airport on the island. The base was part of the New Guinea campaign.
Naval Base Hollandia was a United States Navy base built during World War II at Humboldt Bay, near the city of Hollandia in New Guinea. The base was built by the US Navy Seabees during the Battle of Hollandia, starting on May 9, 1944. Later Naval Base Hollandia became a supply base to support the invasion of the Philippines that started on October 20, 1944. Naval Base Hollandia became an advance headquarter of the United States Seventh Fleet.
Naval Base Alexishafen was a United States Navy base built during World War II at Alexishafen, north of the city of Madang in New Guinea. The base was built by the US Navy Seabees starting June 13, 1944 as part of the New Guinea campaign of the Pacific War. The base was built at the request of the Seventh Amphibious Force of the United States Seventh Fleet to support the many boats patrolling the area. The US Navy built a boat repair depot including Auxiliary floating drydocks. The base was closed in January 28, 1945.
Naval Base Banika Island was a United States Navy base built during World War II on Mbanika Island in the Russell Islands, part of the Solomon Islands. A larger supply depot was built to support the ships fighting in the Pacific War. Also built were a repair base for landing craft, PT boats, and other boats. Banika Island offered excellent fleet anchorage. Banika Island was taken during the Solomon Islands campaign. Also at the base was built the Renard Sound Seaplane Base.
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 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.
Originally established at Fuchu Air Station on July 1, 1957, USFJ, with its U.S. Army, U.S Marine Corps, U.S Navy, and U.S Air Force elements, consists of approximately 54,000 military personnel, 45,000 dependents, 8,000 DoD civilian and contractor employees, and 25,000 Japanese workers. U.S. forces are stationed in Japan pursuant to the U.S.-Japan Treaty of Mutual Cooperation and Security of 1960.
{{cite web}}
: CS1 maint: numeric names: authors list (link)