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Tsukushi-class Survey Ship
The was a class of auxiliary ships of the Imperial Japanese Navy (IJN), serving during World War II. The class consists of two subclasses, which this article handles collectively. Background Since the Meiji period, the Imperial Japanese Navy has carried out hydrographic survey with old naval vessels. While sufficient for routine peacetime survey duties, these obsolete vessels were deemed too slow for service in combat zones. Furthermore, these vessels were essentially fighting ships, and thus were not able to carry many surveying devices. Therefore, in the 1920s and the 1930s, many of these ships were retired. The IJN then allotted Japanese survey ship Katsuriki, ''Katsuriki'' and Japanese submarine tender Komahashi, ''Komahashi'' to survey duties; however, these ships were of merchant ship designs, and were still too slow for the IJN. It then became clear that the IJN required purpose-built ships for hydrographic survey duties. In 1930, the IJN proposed two 1,600-ton survey sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitsubishi Heavy Industries
is a Japanese Multinational corporation, multinational engineering, electrical equipment and electronics corporation headquartered in Tokyo, Japan. MHI is one of the core companies of the Mitsubishi Group and its automobile division is the predecessor of Mitsubishi Motors. MHI's products include aerospace and Automotive industry, automotive components, Air conditioning, air conditioners, elevators, Forklift, forklift trucks, Hydraulic machinery, hydraulic equipment, Printing, printing machines, missiles, tanks, Electric power system, power systems, ships, aircraft, Rail transport, railway systems, and space launch vehicles. Through its defense-related activities, it is the world's 23rd-largest defense contractor measured by 2011 defense revenues and the largest based in Japan. History In 1857, at the request of the Tokugawa Shogunate, a group of Dutch people, Dutch engineers were invited, including Dutch naval engineer Hendrik Hardes, and began work on the ''Nagasaki Yotetsu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrographic Survey
Hydrographic survey is the science of measurement and description of features which affect maritime navigation, marine construction, dredging, offshore wind farms, offshore oil exploration and drilling and related activities. Surveys may also be conducted to determine the route of subsea cables such as telecommunications cables, cables associated with wind farms, and HVDC power cables. Strong emphasis is placed on soundings, shorelines, tides, currents, seabed and submerged obstructions that relate to the previously mentioned activities. The term ''hydrography'' is used synonymously to describe ''maritime cartography'', which in the final stages of the hydrographic process uses the raw data collected through hydrographic survey into information usable by the end user. Hydrography is collected under rules which vary depending on the acceptance authority. Traditionally conducted by ships with a sounding line or echo sounding, surveys are increasingly conducted with the aid o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yokohama, Kanagawa
is the second-largest city in Japan by population as well as by area, and the country's most populous municipality. It is the capital and most populous city in Kanagawa Prefecture, with a population of 3.7 million in 2023. It lies on Tokyo Bay, south of Tokyo, in the Kantō region of the main island of Honshu. Yokohama is also the major economic, cultural, and commercial hub of the Greater Tokyo Area along the Keihin Industrial Zone. Yokohama was one of the cities to open for trade with the West following the 1859 end of the policy of seclusion and has since been known as a cosmopolitan port city, after Kobe opened in 1853. Yokohama is the home of many Japan's firsts in the Meiji period, including the first foreign trading port and Chinatown (1859), European-style sport venues (1860s), English-language newspaper (1861), confectionery and beer manufacturing (1865), daily newspaper (1870), gas-powered street lamps (1870s), railway station (1872), and power plant (1882). Yoko ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jaluit Atoll
Jaluit Atoll ( Marshallese: , , or , ) is a large coral atoll of 91 islands in the Pacific Ocean and forms a legislative district of the Ralik Chain of the Republic of the Marshall Islands. Its total land area is , and it encloses a lagoon with an area of . Most of the land area is on the largest islet ( motu) of Jaluit (10.4 km2). Jaluit is approximately southwest of Majuro. Jaluit Atoll is a designated conservation area and Ramsar Wetland. In 2021 the population of the islands of Jaluit Atoll was 1,409. It was the former administrative seat of the Marshall Islands. History The British merchant vessel '' Rolla'' sighted Jaluit in 1803. She had transported convicts from Britain to New South Wales and was on her way to China to find a cargo to take back to Britain. In 1885, the German Empire annexed Jaluit Atoll and the other Marshall Islands as protectorate. From 1888 to 1906 the islands were administered by the Jaluit Company on behalf of Germany’s colonial governm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gilbert Islands
The Gilbert Islands (;Reilly Ridgell. ''Pacific Nations and Territories: The Islands of Micronesia, Melanesia, and Polynesia.'' 3rd. Ed. Honolulu: Bess Press, 1995. p. 95. formerly Kingsmill or King's-Mill IslandsVery often, this name applied only to the southern islands of the archipelago, the northern half being designated as the Scarborough Islands. ''Merriam-Webster's Geographical Dictionary''. Springfield, Massachusetts: Merriam Webster, 1997. p. 594) are a chain of sixteen atolls and coral islands in the Pacific Ocean, about halfway between Papua New Guinea and Hawaii. They constitute the main part of the country of Kiribati (the name of which is a rendering of "Gilberts" in the phonology of the indigenous Gilbertese language, Gilbertese). Geography The atolls and islands of the Gilbert Islands lie in an approximate north-to-south line. The northernmost island in the group, Makin (atoll), Makin, it is approximately from southernmost, Arorae, as the crow flies. Geographi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4th Fleet (Imperial Japanese Navy)
The 4th Fleet was a fleet of the Imperial Japanese Navy. The Fourth Fleet designation was used during three separate periods. The initial designation was for a group of ships that were assigned to work together during the Russo-Japanese conflict and the period of its immediate aftermath. The second time the designation was used was during the Sino-Japanese conflict, and the third time was as a South Pacific area of command during the middle of the Pacific War. History Russo-Japanese War First established on June 14, 1905, the 4th Fleet was created after the Battle of Tsushima in the Russo-Japanese War specifically to support and cover the landings of Japanese forces in Sakhalin. Afterwards, it was sent to the United States with the Japanese delegation negotiating the Treaty of Portsmouth ending the war, and was disbanded on December 20, 1905. The Fourth Fleet Incident The Fourth Fleet was temporarily resurrected during a war game exercise executed in 1935, playing the role of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Davao Gulf
Davao Gulf is a gulf situated in the southeastern portion of Mindanao in the Philippines. It has an area of or about 520,000 hectares. Davao Gulf cuts into the island of Mindanao from the Philippine Sea. It is surrounded by all five provinces in the Davao Region. The largest island in the gulf is Samal Island. Davao City, on the Gulf's west coast, is the largest and busiest port on the gulf. The Bagobo and the Kaagan / Kalagan, who are the indigenous Lumad tribes endemic to Davao, are known inhabitants of the said gulf. Wildlife The gulf water is regarded as one of the most diverse cetacean habitats in the nation, being home to at least 10 species of toothed whales and dolphins such as sperm whales and beaked whales. Also, whale sharks and sea cows are seen frequently. Furthermore, several ecological phenomena have been observed in Davao Gulf such as a previously unknown predator of the crown-of-thorns starfish The crown-of-thorns starfish (frequently abbreviated to COTS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balikpapan
Balikpapan is a seaport city in East Kalimantan, Indonesia. Located on the east coast of the island of Borneo, the city is the financial center of Kalimantan. Balikpapan is the city with the largest economy in Kalimantan with an estimated 2016 GDP at Rp 73.18 trillion. The city is served by Sultan Aji Muhammad Sulaiman Sepinggan Airport. Port of Semayang was the second busiest seaport in East Kalimantan, after that in Samarinda. With a population of 688,318 according to the 2020 census,Badan Pusat Statistik, Jakarta, 2021. and an official estimate of 738,532 as at mid 2023 (comprising 277,458 males and 361,074 females),Badan Pusat Statistik, Jakarta, 28 February 2024, ''Kota Balikpapan Dalam Angka 2024'' (Katalog-BPS 1102001.6471) Balikpapan is the second most populous city in East Kalimantan, after Samarinda. Balikpapan has been consistently ranked as the most liveable city in Indonesia. However, in 2022, Balikpapan conceded this to Samarinda. Balikpapan was originally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surabaya
Surabaya is the capital city of East Java Provinces of Indonesia, province and the List of Indonesian cities by population, second-largest city in Indonesia, after Jakarta. Located on the northeastern corner of Java island, on the Madura Strait, it is one of the earliest port cities in Southeast Asia. According to the Government of Indonesia, National Development Planning Agency, Surabaya is one of the Regions of Indonesia#Development regions, four main central cities of Indonesia, alongside Jakarta, Medan, and Makassar. The city had a population of 2,874,314 within its city limits at the 2020 census.Badan Pusat Statistik, Jakarta, 2021. With 3,009,286 people living in the city as of mid 2023 (comprising 1,490,358 males and 1,518,928 females) Badan Pusat Statistik, Jakarta, 28 February 2024, ''Kota Surabaya Dalam Angka 2024'' (Katalog-BPS 1102001.3578) and over 10 million in the extended Surabaya metropolitan area, according to the latest official estimate, Surabaya is the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Expeditionary Fleet (Imperial Japanese Navy)
The was a fleet of the Imperial Japanese Navy, their roles were invasion and maintenance of the public order in southwestern area the French Indochina, Philippines, British Malaya and Dutch East Indies. Organization Southern Expeditionary Fleet/1st Southern Expeditionary Fleet The Southern Expeditionary Fleet was organized for Invasion of French Indochina on 31 July 1941. Describe the also. Their jurisdiction area was French Indochina, Singapore and westward. *Structure (extract) *Commander in chief *Chief of staff 2nd Southern Expeditionary Fleet The was reorganized from 3rd Fleet on 10 March 1942. Describe 3rd Fleet about predecessor of the 2nd Southern Expeditionary Fleet. Their jurisdiction area was Dutch East Indies. *Structure (extract) *Commander in chief *Chief of staff 3rd Southern Expeditionary Fleet The was organized on 3 January 1942 for invasion of the Philippines. *Structure (extract) *Commander in chief *Chief of staff 4th Southern Expeditionar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dutch East Indies Campaign
The Dutch East Indies campaign of 1941–1942 was the conquest of the Dutch East Indies (present-day Indonesia) by forces of the Empire of Japan in the early days of the Pacific campaign of World War II. Allied forces attempted unsuccessfully to defend the islands. The East Indies were targeted by the Japanese for their rich oil resources which would become a vital asset during the war. The campaign and subsequent three-and-a-half-year Japanese occupation was also a major factor in the end of Dutch colonial rule in the region. Background The East Indies was one of Japan's primary targets if and when it went to war because the colony possessed abundant valuable resources, the most important of which were its rubber plantations and oil fields; the colony was the fourth-largest exporter of oil in the world, behind the U.S., Iran, and Romania. The oil made the islands enormously important to the Japanese, so they sought to secure the supply for themselves. They sent four fleet ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3rd Fleet (Imperial Japanese Navy)
The was a fleet of the Imperial Japanese Navy (IJN), which was created, and subsequently disbanded on six separate occasions and revived on five separate occasions. History Russo-Japanese War First established on 28 December 1903, the 3rd Fleet was created by the Imperial General Headquarters as an administrative unit to manage vessels considered obsolete for front-line combat service. These vessels were used primarily for training and for coastal patrol duties. The 3rd Fleet came under the aegis of the Combined Fleet for the duration of the Russo-Japanese War from March 1904. Although initially derided as a "dinosaur fleet", the 3rd fleet proved invaluable at the Battle of Tsushima and the Invasion of Sakhalin. It was disbanded on 20 December 1905. South China Fleet The 3rd Fleet was revived on 24 December 1908 as an expeditionary force during the Chinese Republican Revolution, to safeguard Japanese interests (civilians and property) on the Chinese mainland and (if necessary) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
