Dreadnoughts frequently carried torpedo tubes themselves. In theory, a line of battleships so equipped could unleash a devastating volley of torpedoes on an enemy line steaming a parallel course. In practice, torpedoes fired from battleships scored very few hits, and there was a risk that a stored torpedo would cause a dangerous explosion if hit by enemy fire. And in fact, the only documented instance of one battleship successfully torpedoing another came during the action of 27 May 1941, where the British battleship claimed to have torpedoed the crippled at close range.