Dec 11, 1941
0905 - We arrived at the entry of Lingayen Gulf, and setup our patrol course. Status: 80ft, 5kts, no contacts.
Dec 13, 1941
0606 - Sound contact, bearing 272, Long range closing. Adjusting course to intercept.
0639 - Visual yeilded fishing trawler flying American flag. Resumed patrol course.
0757 - Sound contact, bearing 106, Long range closing. Adjusting course to intercept.
0829 - Visual yeilded three fishing trawlers, all flying American flag. Resumed patrol course.
Dec 15, 1941
0402 - Sound contact, bearing 247, Long range closing. Adjusting course to intercept.
Status: 51ft, 4kts.
0504 - Visual yeilded two fishing trawlers, both flying American flag. Resumed patrol course.
Dec 17, 1941
0227 - Spotted a Merchant vessel accompanied by a tug boat, both identified as American. Continued patrol.
0749 - Sound contact, bearing 289, Long range closing. No doubt an American tug boat returning.
0817 - Verified American tug boat. Resumed patrol.
Dec 19, 1941
0426 - Sound contact, bearing 064, Long range closing. Suspect an American merchant leaving the area.
0544 - Visual verification, my suspicions were correct. Resuming patrol.
Dec 20, 1941
0427 - Received new orders to make our way to Davao Gulf, via SULU & CELEBES seas. Refuel/restock in Mariveles optional. Surfaced, and set full speed on new course.
Dec 21, 1941
1044 - Ran into nasty squall off the coast of Mindoro. Dove to 80ft, will surface once clear and resume full speed.
1319 - Sound contact, bearing 355, Long range closing. Hoping this one is not American. If the weather persist, it may not matter what flag the contact is flying.