For the 4 islands in Manila Bay that used to be the Manila Bay Defense Forts, Corregidor-Ft. Mills, Caballo-Ft. Hughes, Fraile-Ft. Drum, Carabao-Ft.Frank.
Zo658. A Navy deep sea diver is going over the side in San Jose Bay between Corregidor and Caballo Islands in 1945. I back we see the 92 Garage area on Corregidor and Mt. Limay on Bataan behind the diver. This is the Philippine Silver Recovery in 1945, image curtesy as stated above.