C12 was built by Vickers at their Barrow-in-Furness shipyard, laid down on 27 November 1906 and was commissioned on 19 January 1908. The boat was sunk in a collision with a destroyer in the Humber Estuary on 6 October 1918.
The C12 was built by Vickers at their Barrow-in-Furness shipyard, launched on November 27, 1906, and officially entered service on January 19, 1908. Its life was cut short in a devastating collision with a destroyer in the Humber Estuary on October 6, 1918.