On this day, 13 January 1919, there was a mutiny on the British Royal Navy patrol boat Kilbride at Milford Haven, which was to be sent to Russia to fight against the revolution. The sailors rebelled and hoisted the red flag. It was one of a series of mutinies and rebellions by British sailors around this time.
There is a short account of this and other naval mutinies of the time here: https://libcom.org/history/articles/royal-navy-mutinies-british-1918
Pictured: the Kilbride, c1916 https://www.facebook.com/workingclasshistory/photos/a.296224173896073/1897913653727109/?type=3