HMS C4 was a British C class submarine built by Vickers at Barrow. She was laid down on the 25th November 1905 and was commissioned on the 13 March 1907. The British C class submarines were the last class of petrol engine submarines of the Royal Navy and marked the end of the development of the Holland-class in the Royal Navy. ... Vickers was a famous name in British engineering that existed through many companies from 1828 until 2004. ... March 13 is the 72nd day of the year in the Gregorian calendar (73rd in leap years). ... 1907 (MCMVII) was a common year starting on Tuesday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Wednesday of the 13-day-slower Julian calendar). ...

C4 was the only C clas submarine not to be scrapped at the end of the war, instead she was used for trial and sold on 28 February 1922. February 28 is the 59th day of the year in the Gregorian calendar. ... Year 1922 (MCMXXII) was a common year starting on Sunday (link will display full calendar). ...

References

• Submarines, War Beneath The Waves, From 1776 To The Present Day, By Robert Hutchinson.