Arpha was a 602 GRT 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.
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 31 inches (79 cm) bore by 21 inches (53 cm) stroke. These could propel her at a speed of 14 knots (26 km/h). After conversion, Arpha was 195 feet 4 inches (59.54 m) long, with a beam of 28 feet (8.53 m) and a depth of 14 feet 2 inches (4.32 m).
HMS or hms may refer to:
HMS M30 was a Royal Navy M29-class monitor of the First World War.
The availability of ten 6 inch Mk XII guns from the Queen Elizabeth-class battleships in 1915 prompted the Admiralty to order five scaled down versions of the M15-class monitors, which had been designed to utilise 9.2 inch guns. HMS M30 and her sisters were ordered from Harland & Wolff, Belfast in March 1915. Launched on 23 June 1915, she was completed in July 1915.
Upon completion, HMS M30 was sent to the Mediterranean. Whilst enforcing the Allied blockade in the Gulf of Smyrna, HMS M30 came under fire from the Austro-Hungarian howitzer battery 36 supporting the Turkish, and was sunk on 14 May 1916.