Alongside the single missions, "Aces of the Deep" includes a single player Career Mode where the player can choose which year of the war he wants to start his career, up until the end of the war. Career features the "Nightclub" for war news, scuttlebutt, and viewing the tonnage board. Within the Career Mode the player can receive promotions, medals, and opportunities to take command of newer U-boats. There are three models of U-boats in several variations for the player to choose from, each of which becomes available during its historical period.