Harbours at Batavia and Surabaya, Dutch East Indies considered to be safe according to the U.S. Joint Intelligence Committee. Daily summary dated 22 December 1941

An item referred to ALUSNA Singapore reporting that at the moment Batavia and Surabaya were considered to be safe and providing better harbours than Sumatra and South Java.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary No. 12 dated 22 December 1941.