HMAS "Platypus" was a submarine depot ship and base ship operated by the Royal Australian Navy (RAN), ordered prior to World War I to support the Australian submarines originally known as just AE1, HMAS "AE1, was an "E"-class submarine of which organization?
HMAS Platypus (1917) HMAS "Platypus" was a submarine depot ship and base ship operated by the Royal Australian Navy (RAN) between 1919 and 1946. Ordered prior to World War I to support the Australian submarines "AE1" and "AE2", "Platypus" was not completed until after both submarines had been lost, and she was commissioned into the Royal Navy from 1917 to 1919.
HMS H1 HMS "H1" was a British "H"-class submarine built by Canadian Vickers Co., Montreal. She was laid down on 11 January 1915 and was commissioned on 26 May 1915. "H1" crossed the Atlantic from St John's, Newfoundland to Gibraltar escorted by the armed merchant cruiser HMS "Calgarian" . She was accompanied by "H2" , "H3" and "H4" . "H1" mistakenly sank Italian submarine "H5" off Cattaro on 15 April 1918. "H1" was sold on 7 March 1921 in Malta.