Robinson had top billing over Bogart in their four previous films together: Bullets or Ballots (1936), Kid Galahad (1937), The Amazing Dr. Clitterhouse (1938) and Brother Orchid (1940).
The boat used by Rocco's gang to depart Key Largo, with Bogart's character at the helm, is named the Santana, which was also the name of Bogart's personal 55-foot (17 m) sailing yacht [REF].