Before revision: Taking advantage of the powerful Armstrong-type batteries , Latorre shelled Huáscar for almost two hours, and Grau was killed in action.
After revision: with armour-piercing projectilesthe monitor Huascar only with ordinary elongated shot could cause small damages to the Chilean ironcladsTaking advantage of the powerful Armstrong-type batteries , Latorre shelled Huáscar for almost two hours, and Grau was killed in action.