East of Gorontalo

First published in Thrilling Adventures, January 1940. Reprinted in the collections West from Singapore and The Collected Short Stories of Louis L'Amour, Vol 4.
Ponga Jim Mayo had been captain of the S.S. Natuna until its owner sold it to a combine run by Mayo's old enemy, Pete Lucieno. Now Mayo is certain that Lucieno is up to no good and Mayo is out to stop it; the it this time turning out to be running a shipment of illegal guns and ammo out to a submarine to cause trouble in New Guinea. Mayo will find himself working with Major Arnold of British Intelligence.