The Seabee task was building pontoon piers out into Lingayen Gulf so the massive about of supplies needed for the invasion could be unloaded quickly.
[2][3] Seabee built a Naval Base Headquarters at the city of San Fernando on the north east side of Lingayen Gulf.
The US Navy's VPB-71, Patrol Bombing Squadron 71, operated Consolidated PBY Catalina type PBY-5A, called "Black Cat" out of the seaplane bases.
The Black Cat and Martin PBM, did antisubmarine patrols and attacked Empire of Japan shipping in the South China Sea.
US Navy Seabees built seaplane ramps and bases both at Sual Bay and Cabalitan Island.
[8] The invasion of Lingayen Gulf was costly for the US Navy, from December 14, 1944, to January 13, 1945, 24 ships were sunk and 67 were damaged by kamikaze attack planes.