- Added the Bay-class frigate.
- Added the Black Swan-class sloop.
- Added the Béarn-class aircraft carrier.
- Added the Vaquelin-class destroyer.
- Added the B-26 Marauder bomber.
- Added the Lioré-et-Olivier LeO 45 bomber.
- Added the Lockheed P-38 Lightning fighter.
- Added the Messerschmitt Bf 110 fighter.
- Enemy will change its submersible doctrines over time regarding patrol areas, AA usage, combat behaviour, and wolf packs.
- Operation Pointblank may be triggered before December 1941 by achieving naval superiority.
- Added some adaptive difficulty to the campaign if the enemy navy is severely outmatched.
- Added bindable shortcut keys to jump to higher timescales.
- The sound of enemy depth charges hitting the water is audible from underwater.
- Added more depth charge detonation depth variation.
- Fixed the late-game port capture missions in single fleet mode.
- The ship purchase popup will not allow the player fleet to exceed its maximum fleet size in single fleet mode.
- Troop-only convoy fleets will automatically start transporting again once finished waiting for enlisted.
- Stopped the game getting stuck if paused right as combat ends.
- Fixed the propeller on the Curtiss Seahawk.