The eighth HMS Vanguard of the British Royal Navy was an central battery ironclad battleship, by Edward Reed launched in 1870. In 1875, the ship was sunk during a summer cruise in a collision in fog with the ironclad . None of the crew were lost, but the commanding officer of the ship never commanded another vessel in his career. The wreck lies near the Kish lightship off the coast of Ireland and is protected under the Irish National Monument Act. Design and construction Vanguard was long between perpendiculars. She had a beam of and a draught of forward and aft. The ship normally displaced . Propulsion Vanguard was with two sets of 2-cylinder horizontal single expansion, return connecting-rod and 6 rectangular boilers that drove twin screws. The engine had a total designed output of which gave Vanguard a maximum speed of . Armament Her armament consisted of ten 12-ton MLR guns all in a two-tier central battery where six were on MD and two on UD. Furthermore she had four /64-pounder (71 cwt) MLR on UD, with two forward and two aft and six 20-pounder guns for saluting. Service history Vanguard — under the command of Captain Richard Dawkins, sailed out of Kingstown (now Dún Laoghaire) harbour on 27 August 1875 in company with three other ironclads, , and . The ships were part of the First Reserve Squadron and were on a summer cruise around the Irish coast. The squadron — under the command of Admiral Tarleton, was en route to Queenstown (Cobh), County Cork where the cruise would finish. As they passed the Kish lightship, a heavy fog came down which restricted visibility to less than a ship's length. Vanguards sister ship — Iron Duke — noticed she was drifting off course and began returning to her proper station. A problem with her steam plant rendered her foghorn inoperable, and could not be used to alert the other vessels of her position or course. At about 12:50, a look-out on Vanguard spotted a sailing ship directly ahead. As Vanguard turned to avoid it, Iron Duke appeared out of the fog on her port side less than away. Collision was unavoidable. Iron Dukes underwater ram tore open Vanguards hull near her boilers. Iron Duke freed herself after a few minutes, sustaining only minor damage. Vanguard, however, was sinking. Her pumps could move water at a rate of 3,000