At 01:30 on 21 October 1917, the convoy Marmion was escorting encountered another convoy that had not been expected. A modified R-class destroyer collided with her. Lifted by the swell, the striking ship came down on Marmion and cut her in two. Only ten bodies were recovered.
Chapter · 18:13-19:18
Marmion's loss when two convoys met unexpectedly
An unexpected encounter between convoys ended Marmion's career in a collision on 21 October 1917.