Battery Hearn, One of the First Batteries that we have visited. It features one large, I mean very large battery canon, and a spare battery just behind it. It is just one of the 23 Batteries that are installed in the Island.
The longest-range coastal pieces were the two 12-inch (305 mm) guns of Batteries Hearn and Smith, with a horizontal range of 29,000 yards (27,000 m). Although capable of an all around traverse, these guns were not effective for use against targets on Bataan due to their flat trajectories.