HMS Arpha
Introduction '''''Arpha''''' was a  passenger ferry built in 1900 as '''''Canterbury''''' for the South Eastern and Chatham Railway. She passed to the Southern Railway on 1 January 1923.She was sold to W E Guinness in 1926 and renamed ''Arpha''. In 1938 she was sold to Sark Motorships Ltd, only to be requisitioned by the Royal Navy in 1939.Postwar, she was sold to Compania Shell de Venezuela and renamed '''''Coriano'''''. After a further change of ownership she was scrapped in 1955.
Description The ship was built by W Denny & Bros, Dumbarton. She was yard number 640 and was launched on 6 December 1900 with completion in January 1901.As built, she had a GRT of 566 and a NRT of 144.She was powered by two triple expansion steam engines, which had cylinders of 13½ inches (34 cm), 20½ inches (52 cm) and  bore by  stroke. These could propel her at a speed of . After conversion, ''Arpha'' was  long, with a beam of  and a depth of .
History ''Canterbury'' was built for the South Eastern and Chatham Railway. She was used on their Dover - Calais route. Her port of registry was London. In 1926, ''Canterbury'' was sold to W E Guinness and was rednamed ''Arpha''. She was converted to a yacht, with a GRT of 602 and a NRT of 233.Her port of registry was changed to Cowes, Isle of Wight. On 6 June 1930, she ran aground in Moon Sound (). She was refloated on 10 June. In 1938, Guinness sold her to the Crete Shipping Co Ltd, London, who sold her to Sark Motorships Ltd later that year. Her port of registry was changed to Guernsey.In 1939, ''Arpha'' was requisitioned by the Royal Navy. She was used as an armed boarding vessel in the Mediterranean and Red Sea as part of the Contraband Control Service. For the duration of the war, ''Arpha'' was shown on Lloyd's Register as still in the ownership of Sark Motorships Ltd. In 1946, ''Arpha'' was sold to W J Brown. She was operated under the management of Worms & Co Ltd. Later that year she was sold to the Shell Co of Venezuela Ltd London, operating under the management of the Anglo-Saxon Petroleum Co Ltd. She was renamed ''Coriano''. In 1947, she was sold to the Caribbean Petroleum Co, Venezuela. ''Coriano'' was sold in 1949 to the Shell Caribbean Petroleum Co, Maracaibo. She was used to carry passengers during the construction of a refinery. In 1955, ''Coriano'' was sold to J M Perez Hernandez. She was scrapped by North American Smelting Co, Bordentown, New Jersey, arriving for scrapping on 28 October 1955.
Official number and code letters Official numbers were a forerunner to IMO numbers. ''Canterbury'' and ''Arpha'' had the United Kingdom official number 112803 ''Arpha'' used the code letters MFCF.
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