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RSS Persistence (209)
''Persistence'' (209) is the third ship of the ''Endurance''-class landing platform dock of the Republic of Singapore Navy. Development The navy's intention to purchase the ''Endurance-''class was revealed by former Defence Minister Dr. Tony Tan during his visit to Tuas Naval Base on 3 August 1996. These ships were to replace the five ex- United States Navy (USN) ''County''-class LSTs, which were acquired by Singapore from the United States in the 1970s. ST Marine was awarded the government contract to design and build the four ships – a significant milestone for the local defence and shipbuilding industries given the scale and extensiveness of the programme. Construction and career She was laid down in 1998 and launched on 18 March 1999. She was commissioned on 7 April 2001 with the hull number 209. RSS ''Persistence'' on 4 January 2005 joined RSS ''Endurance'' to Aceh in Indonesia to deliver emergency supplies and medical personnel to aid in the relief effo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maritime Call Sign
Maritime call signs are call signs assigned as unique identifiers to ships and boats. All radio transmissions must be individually identified by the call sign. Merchant and naval vessels are assigned call signs by their national licensing authorities. History One of the earliest applications of radiotelegraph operation, long predating broadcast radio, were marine radio stations installed aboard ships at sea. In the absence of international standards, early transmitters constructed after Guglielmo Marconi's first trans-Atlantic message in 1901 were issued arbitrary two-letter calls by radio companies, alone or later preceded by a one-letter company identifier. These mimicked an earlier railroad telegraph convention where short, two-letter identifiers served as Morse code abbreviations to denote the various individual stations on the line (for instance, AX could represent Halifax). "N" and two letters would identify U.S. Navy; "M" and two letters would be a Marconi station. On Apr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |