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HMS Vernon (1781)
''Vernon'' was launched at Bordeaux in 1775, almost certainly under another name. She first appeared in British records in 1779. Between 1781 and 1782, she was an armed transport and in 1781 took part in an action that cost her 13 crew members killed and wounded. After the war she traded widely. In 1787 she carried emigrants to Sierra Leone for the Committee for the Relief of the Black Poor. She was wrecked in December 1792. Career ''Vernon'' first appeared in ''Lloyd's Register'' (''LR'') in 1779. Between 1781 and 1782, ''Vernon'' served as an hired armed storeship. On 10 September 1781, Captain Hall, of the transport ''Vernon'' was at Cork, from where he wrote a letter with a report of the action of 21 July 1781 in which she had been involved. She had sailed from Halifax in a convoy of 13 colliers and merchant vessels escorted by HMS ''Charlestown'', the two sloops-of-war and , and ''Jack'', like ''Vernon'' an armed merchant ship, though much smaller. The convoy was off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Builder's Old Measurement
Builder's Old Measurement (BOM, bm, OM, and o.m.) is the method used in England from approximately 1650 to 1849 for calculating the cargo capacity of a ship. It is a volumetric measurement of cubic capacity. It estimated the tonnage of a ship based on length and maximum beam (nautical), beam. It is expressed in "tons burden" ( en-em , burthen , enm , byrthen ), and abbreviated "tons bm". The formula is: : \text = \frac where: * ''Length'' is the length, in foot (length), feet, from the stem (ship), stem to the sternpost; * ''Beam (nautical), Beam'' is the maximum beam, in feet. The Builder's Old Measurement formula remained in effect until the advent of steam propulsion. Steamships required a different method of estimating tonnage, because the ratio of length to beam was larger and a significant volume of internal space was used for boilers and machinery. In 1849, the Moorsom System was created in the United Kingdom. The Moorsom system calculates the cargo-carrying capaci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |