Chuuk Lagoon, previously Truk Atoll, is an atoll in the central Pacific. It lies about 1,800 kilometres northeast of New Guinea and is part of Chuuk State within the Federated States of Micronesia (FSM). A protective reef, 225 kilometres (140 mi) around, encloses a natural harbour 79 by 50 km, with an area of 2,130 km2 (820 sq mi). It has a land area of 93.07 square kilometres, with a population of 36,158 people and a maximal elevation of 443 metres (1,453 ft). Weno city on Weno Island functions as both the atoll's capital and the state capital, and is the largest city in the FSM with its 13,700 people.
Operation Hailstone was a massive United States Navy air and surface attack on Truk Lagoon on 17–18 February 1944, conducted as part of the American offensive drive against the Imperial Japanese Navy in the Pacific Ocean theatre.
Naka (那珂) was a Sendai-class light cruiser in the Imperial Japanese Navy (IJN), named after the Naka River in the Tochigi and Ibaraki prefectures of eastern Japan. Naka was the third vessel completed in the Sendai class of light cruisers, and like other vessels of her class, she was intended for use as the flagship of a destroyer flotilla.
Chuuk International Airport is an airport located on Weno, the main island of the State of Chuuk in the Federated States of Micronesia.
Chūichi "King Kong" Hara was a Japanese admiral in the Imperial Japanese Navy during World War II. Heavier and taller than the average Japanese person, he was nicknamed "King Kong" by his friends earlier in his career.
The Japanese aircraft carrier Taiyō was the lead ship of her class of three escort carriers. She was originally built as Kasuga Maru (春日丸), the last of three Nitta Maru class of passenger-cargo liners built in Japan during the late 1930s for NYK Line. The ship was requisitioned by the Imperial Japanese Navy (IJN) in early 1941 and was converted into an escort carrier. Taiyō was initially used to transport aircraft to distant air bases and for training, but was later used to escort convoys of merchant ships between Japan and Singapore. The ship was torpedoed twice by American submarines with negligible to moderate damage before she was sunk in mid-1944 with heavy loss of life.
Un'yō was a Taiyō-class escort carrier originally built as Yawata Maru (八幡丸), one of three Nitta Maru-class cargo liners built in Japan during the late 1930s. She was transferred to the Imperial Japanese Navy (IJN) during the Pacific War, renamed, and was converted into an escort carrier in 1942. The ship spent most of her service ferrying aircraft, cargo and passengers to various bases in the Pacific. Un'yō was badly damaged by an American submarine in early 1944. After repairs were completed in June, the ship resumed transporting aircraft and cargo. During a return voyage from Singapore in September, she was sunk by the submarine USS Barb.
Tachikaze was a Minekaze-class destroyer, built for the Imperial Japanese Navy immediately following World War I. Advanced for their time, these ships served as first-line destroyers through the 1930s, but were considered obsolescent by the start of the Pacific War.
Fumizuki was one of twelve Mutsuki-class destroyers, built for the Imperial Japanese Navy (IJN) during the 1920s. During the Pacific War, she participated in the Philippines Campaign in December 1941 and the Dutch East Indies Campaign in early 1942. In March, she was assigned to convoy escort duties in and around Malaya and the Dutch East Indies until she was transferred to Rabaul in early 1943 to ferry troops around New Guinea and the Solomon Islands.
The Hakachi (波勝) was a bomb target ship of the Imperial Japanese Navy (IJN) serving during the Second World War, the only ship of her class.
W-26 was a W-19-class minesweeper operated by the Imperial Japanese Navy during World War II.
Aikoku Maru (愛国丸) was an armed merchant cruiser of the Imperial Japanese Navy in World War II. The ship entered service in 1940, the ship was later converted to an ammunition ship. She was sunk in February 1944 during Operation Hailstone.
Heian Maru (平安丸) was a Japanese ocean liner launched in 1930 and operated primarily on the NYK line's trans-Pacific service between Yokohama and Seattle. Shortly before the outbreak of the Pacific War, it was requisitioned by the Imperial Japanese Navy and converted to use as an auxiliary submarine tender. In 1944 it was sunk by American aircraft at Chuuk Lagoon during Operation Hailstorm. Its submerged hulk – the largest of Chuuk's "Ghost Fleet" – remains a popular scuba diving destination.
Akagi Maru was one of three Akagi Maru-class armed merchantmen of the Imperial Japanese Navy, and was launched in 1936. Akagi Maru was used initially used as a refrigerated cargo/passenger ship between ports in Japan, Europe and South America. The ship took part in World War II in the Pacific Ocean and was sunk with great loss of life by air attack on 17 February 1944 in Chuuk Lagoon as a part of the Allied Operation Hailstone.
I-33 was an Imperial Japanese Navy B1 type submarine. Completed and commissioned in 1942, she served in World War II, making one war patrol that included the Battle of the Eastern Solomons, before sinking accidentally in September 1942. Refloated and repaired, she sank again in a diving accident during post-repair sea trials in June 1944.
I-38 was an Imperial Japanese Navy B1 type submarine. Completed and commissioned in 1943, she served in World War II, operating on supply missions in the New Guinea campaign and the Solomon Islands campaign, and conducting war patrols in the Solomons, off the Mariana Islands, and in the Philippine Sea before she was sunk in November 1944.
Kimiuo Aisek Memorial Museum is a museum in Chuuk State, in the Federated States of Micronesia. It is the first museum to be established on the island.
Sōya (宗谷) is a Japanese icebreaker that serves as a museum ship in Tokyo after a long and storied service spanning some of the 20th century's historic events. It is named for Sōya Subprefecture in Hokkaido.
US Naval Base Carolines included a number of United States Navy bases on the Caroline Islands in the western Pacific Ocean, to the north of New Guinea during World War II. The bases were built to support the island hopping Pacific war efforts of the allied nations fighting the Empire of Japan.
Tonan Maru No. 3, from 1951 simply the Tonan Maru, was a Japanese whale oil factory ship. Built at Osaka in 1938 she was the largest merchant ship built in Japan to that point. She carried out whaling in the South Atlantic and in 1941 was blacklisted by the British government, believed to be because she was suspected of refuelling German vessels in the Pacific during the Second World War. Following the Japanese entry into the war Tonan Maru No. 3 was operated as an oil tanker in support of military operations. She survived 11 torpedo hits from USS Tinosa in 1943 as most failed to detonate. Tonan Maru No. 3 was sunk in Chuuk Lagoon by carrier-based aircraft in the 17 February 1944 Operation Hailstone. She was salvaged by Japan after the war, rebuilt and returned to service as the Tonan Maru in 1951. She returned to whaling and was scrapped in 1971.
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