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The ''Descubierta'' and ''Atrevida'' were twin corvettes of the Spanish Navy, custom-designed as identical special exploration and scientific research vessels . Both ships were built at the same time for the Malaspina Expedition. Under the command of Alessandro Malaspina (''Descubierta'') and José de Bustamante y Guerra (''Atrevida'') the two vessels sailed from Spain to the Pacific Ocean, conducting a thorough examination of the internal politics of the American Spanish Empire and the Philippines. They explored the coast of Alaska and worked to reinforce Spain's claim to the Pacific Northwest in the aftermath of the Nootka Crisis. After crossing the Pacific Ocean, the government in the Philippines examined. Exploration and diplomatic reconnaissance followed, with stops in China, New Zealand, Australia, and Tonga. Under Malaspina's supervision and according to his specifications the ''Descubierta'' and ''Atrevida'' were constructed at the La Carraca shipyard in Cadiz by the shipbuilder Tómas Muñoz . Both vessels were long with a beam of , a depth of hold of , and a tonnage of 306 ''toneladas''.〔The Spanish word ''toneladas'' is a unit of capacity of a ship's hold, roughly equivalent to English terms ton, tonnage, or tons burthen. The exact size of a ''tonelada'' varied but was usually somewhat smaller than the English ton. For older ships it is difficult if not impossible to convert between English tons and Spanish ''toneladas''. See (Glossary of Spanish Names, Blue Water Ventures ). The ''tonelada'' was eventually standardized to (See ).〕 The complement of both the ''Descubierta'' and the ''Atrevida'' was 104. Their armament consisted of fourteen 6-pounder and two 4-pounder cannons. They were launched together on 8 April 1789. ==Malaspina Expedition== (詳細はJames Cook, the Malaspina expedition was conducted in a highly scientific manner. Numerous scientists from many fields were among the crew. Indigenous peoples, such as the Tlingit and Tongan, were studied by the expedition's ethnographers. The ''Descubierta'' and ''Atrevida'' sailed from Cadiz on 30 July 1789, stopping first at Montevideo on the Río de la Plata, then sailing south along the coast of Patagonia and visiting the Falkland Islands (''Islas Malvinas''). After rounding Cape Horn the expedition stopped at several Chilean ports and surveyed the Juan Fernández Islands. The two corvettes sailed north separately, surveying and mapping the coast between Peru and Mexico, where they arrived at the end of March 1790.〔 In Mexico Malaspina received instructions from the Spanish king, Carlos IV requiring a change of plans. Instead of sailing to the Hawaiian Islands and the Kamchatka Peninsula, Malaspina was to sail to Alaska and survey the coast between Mount Saint Elias and Nootka Sound, on Vancouver Island, in order to prove or disprove the existence of a Northwest Passage supposedly located in that area. Accordingly, the two corvettes sailed from Acapulco on 1 May 1791, and arrived at Yakutat Bay by the end of June. Staying at Yakutat Bay for about a month, the scientists made detailed ethnographic studies of the local Tlingit people. Surveys along the coast of Alaska revealed no hint of the fabled Northwest Passage. On July 27 Malaspina and Bustamante headed south to Nootka Sound, arriving there on 12 August 1791. They remained at Nootka Sound for about a month. Detailed surveys were made of the area, while the ethnographers studied the Nuu-chah-nulth (Nootka) people.〔 Leaving Nootka Sound, Malaspina and Bustamante sailed the ''Descubierta'' and ''Atrevida'' south to Monterey, Alta California. There Malaspina learned from Juan Carrasco that an inland sea had been discovered near Nootka Sound. It was the Strait of Georgia. Malaspina knew that an exploration voyage had to be dispatched immediately. He gave two of his officers, Dionisio Alcalá Galiano and Cayetano Valdés y Flores, command of two newly constructed ''goletas'' (schooners or brigs), and instructed them to thoroughly explore the new discovery. Malaspina himself supervised the final construction and fitting out of the two ''goletas'', called the ''Sutil'' and the ''Mexicana''.〔 The Malaspina expedition crossed the Pacific Ocean, from Acapulco to Manila in the Philippines, by way of the Mariana Islands. Coastal surveys were done and a side-trip to Macao was made. Then the two corvettes sailed southwest, landing at Espiritu Santo in the New Hebrides, then continuing on to southern New Zealand. After a visit to Dusky Sound, previously explored by Cook, the Spaniards explored Doubtful Sound, which no European had visited before.〔 From New Zealand the expedition sailed west to Port Jackson, Australia (today part of Sydney). They arrived in March 1793, about five years after the British first colonized Australia. The Malaspina expedition stayed for about a month. Relations with the British colonists were warm and friendly. The Spanish conducted scientific experiments, including astronomical and hydrographic observations, and the collection of many specimens of flora, fauna, and minerals. They also observed the British settlement, taking special note of any potential threat to Spanish interests in the Pacific. Malaspina was concerned that the increasing British presence in the Pacific might jeopardize Spanish trade between the Americas and the Philippines, which the Manila galleons had carried out for over two centuries with virtually no outside interference.〔 The Spanish corvettes left Port Jackson on 11 April 1793 and sailed northeast to Tonga, then known as the Friendly Islands. Cook had visited the southern Tongan islands in 1773. Malaspina opted to visit the northern archipelago now known as Vavaʻu. After the stay in Tonga the expedition sailed to Peru, then back around Cape Horn and on to Spain, arriving in Cadiz on 21 September 1793 after a voyage of over four years.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Descubierta and Atrevida」の詳細全文を読む スポンサード リンク
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