[5] The Acherons had a range of 1,620 nautical miles (3,000 km; 1,860 mi) at a cruising speed of 15 knots (28 km/h; 17 mph).

[4] The primary armament of the ships consisted of a pair of BL 4-inch (102 mm) Mk VIII guns in single, unprotected pivot mounts fore and aft of the superstructure.

[6] Druid, the sixth ship in the Royal Navy of that name,[7] was ordered under the 1910–1911 Naval Programme from William Denny & Brothers.

[8] She was present with the First Destroyer Flotilla on 28 August 1914 at the Battle of Heligoland Bight, led by the scout cruiser Fearless.

[11] On 24 January 1915 the First Destroyer Flotilla, including Druid, were present at the Battle of Dogger Bank, led by the light cruiser Aurora.