High Quality Content by WIKIPEDIA articles! HMS Hercules was a Colossus-class battleship built by Palmers, launched on 10 May 1910, and commissioned on 31 July 1911 at Portsmouth. She was a 20,000-ton dreadnought, mounting ten 12 inch (305 mm) guns in five twin gun turrets, sixteen 4 inch (101.6 mm), four 3 pounders, and three 21 inch (533.4 mm) torpoedo tubes. She was capable of 21 knots (39 km/h). Her crew numbered 751. She was flagship of the 2nd Division Home Fleet and from July 1912 to March 1913 she was flagship of the 2nd Battle Squadron. On 22 March 1913 during a gale she collided with and damaged SS Mary Parkes of Glasgow, suffering only minor damage herself. In August 1914 she joined the Grand Fleet.