She arrived at Soerabaja on the north coast of Java on 2 February, her crew frustrated by their attempts to intercept enemy shipping, but with information on tides, currents, navigational aids, and Japanese tactics. Nine days later, she got underway to patrol the northern approaches to Makassar City and intercept Japanese reinforcements expected to move through Makassar Strait and the Flores Sea. Arriving on 15 February, she patrolled initially between De Bril bank and the reefs to the south, then shifted to other areas. Her hunting remained unsuccessful.
