In November 1917, K4 collided with sister ship during an accident off the Danish coast. The light cruiser operating with K1 had to make a sharp turn to avoid three units from the 4th Cruiser Squadron. And in the confusion, K4 collided with K1. The crew of K1 were rescued and K1 sunk by the Blonde. The K4 was under the command of Lieutenant-Commander Alfred Fenner. There is a blue plaque on the wall of his home in the town of Cromer in Norfolk.