 Complete the following phrase:  HMS Plucky was an which served with the Royal Navy during the First World War. The M class were an improvement on the previous , capable of higher speed. Launched on 21 April 1916 by Scotts of Greenock, the vessel served as part of the Grand Fleet, spending most of the war based out of Plymouth, apart from a brief sojourn working from the Irish port of Buncrana. Plucky was mainly involved in anti-submarine warfare and escorting the merchant ships that made up the convoys travelling to and from England, colliding with one, the collier Mervin in February 1917. Fortunately the merchant vessel was unharmed, but the subsequent explosion but the destroyer temporarily out of action. After 