This picture is from batteryboy, Tony Feredo, and he said this: if those guns were installed at Monja, its range can reach as far Hermosa, Bataan at its maximum elevation and would have caused additional damage to the landing barges. The 16-inch Army guns were said to have been more powerful than its Navy counterparts at that time due to its design and ability to pack in more charges. It was displayed in the thread La Monja, this is the URL: