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The R class patrol boats was a class of Finnish patrol boats, originally constructed as coastal minesweepers. They were modified into patrol boats by the end of the 1960s and transferred to the Patrol Flotilla and later to the 7th Missile Flotilla. They were then used for sea patrol and as anti-submarine warfare vessels. They were stricken from the Finnish Navy list in the 1990s. The R class was much liked in the Finnish Navy, due to their low fuel consumption and their good seagoing qualities. They were in principle unsinkable (the vessels could have a list of 115 degrees without sinking and still return to upright position). The three later vessels, ''Ruissalo'', ''Raisio'' and ''Röyttä'', were somewhat larger and the vessels are therefore sometimes referred to as the Rihtniemi and Ruissalo classes. However, the Finnish Navy used the designation R class for all five vessels. == Vessels of the class == ;''Rymättylä'' (51) / ''Suurop'' (P 421): Ordered in July 1955 from Rauma-Repola in Rauma, launched in 1956, and entered service on May 20, 1957. She was sold to the Estonian Navy in 1999 as the EML ''Suurop''. ;''Rihtniemi'' (52) / ''Ristna'' (P 422): Ordered in July 1955 from Rauma-Repola in Rauma, launched in 1956, and entered service on February 21, 1957. She was sold to the Estonian Navy in 1999 as the EML ''Ristna''. ;''Ruissalo'' (53): Ordered from Laivateollisuus, Turku. Taken into use on August 11, 1959. Scrapped in the early 2000s. ;''Raisio'' (54): Ordered from Laivateollisuus, Turku. Taken into use on September 12, 1959. Sold on the private market. ;''Röyttä'' (55): Ordered from Laivateollisuus, Turku. Taken into use on October 14, 1959. ''Röyttä'' was transferred to the marine reserve training units in 2000 and is used for training. She was renovated in both 1980 and 2000. She was later sold to a private adventure company in Tampere. She currently operates as the commercial cruise ship ''Vartiovene 55'' in Helsinki. ;''Carlos Alban'': Built in 1971. In use 1971-1997. ''Ruissalo'' class patrol boat, operated by the Colombian Coast Guard. ;''Nito Restrepo'': Built in 1971. In use 1971–1990. ''Ruissalo'' class patrol boat, operated by the Colombian Coast Guard. ;''Jorge Soto del Corval'': Built in 1971. In use 1971–1984. ''Ruissalo'' class patrol boat, operated by the Colombian Coast Guard. 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「R-class patrol boat」の詳細全文を読む スポンサード リンク
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