Japanese submarine let Chilean steamship ss Copiapo go according to the U.S. Joint Intelligence Committee. Daily summary dated 2 January 1942

An item reported that a Japanese submarine halted the Chilean steamship ss Copiapo off the Peruvian coast but let her free when her identity became clear. This item could not be confirmed.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary No. 23 dated 2 January 1942