Despite that the Philippine capital of Manila was already declared an open city on 23 Dec 1941, Japanese bombing continued without interruption. Shortly after, US Navy Admiral Hart of the Asiatic Fleet departed Manila by submarine USS Shark for Soerabaja, Java. In Manila Bay, USS Peary was damaged by Japanese aircraft. Philippine naval defense vessels moved to the island of Corregidor at the mouth of Manila Bay, and 411 US Marines originally based at Cavite moved to Corregidor Island.
