U.S.S. Canopus War diary of U.S.S. Canopus (AS-9). All Posts Diary of U.S.S. Canopus 12 December 1941 (Alongside Pier 3 Manila) 0350 Air raid sirens sounded (False alarm). 0955 Air raid sirens sounded. No planes sighted but heard OLONGAPO was attacked, with 7 PBY planes destroyed on water. SEADRAGON and SEAL alongside during the day. PrevPreviousDecember 11, 1941 NextDecember 12, 1941Next 12/12/41, Manila, Olongapo, Port Area, u.s.s. Canopus