# Infinite money

At the dock screen, press Left(2), Right(2), L2, R2, R1, L1, Square, Triangle.
# Speed boost

Press Up on the D-pad several times.
# 203mm Chain Gun

Kill 100 Aircraft as the Japanese to unlock the 203mm Chain Gun. It has the following stats: Offensive: 400, Weight: 100, Range: 3500, Ammo: 5000, only available for Battleships or Battle Carriers.
# 30mm CIWS

Kill 100 Aircraft as the Americans to unlock the 30mm CIWS.
# 356mm Chain Cannon

Kill 500 Aircraft as the Japanese to unlock the 356mm Chain Cannon.
# 406mm Chain Gun

Kill 999 Aircraft to unlock the 406mm Chain Gun.
# 46cm 60 Caliber Deck Gun

Kill 100 PT Boats to unlock the 46cm 60 Caliber Deck gun, only available for Battleships and Battle Carriers.
# 80cm Guided Torpedo

Kill 100 Cruisers to unlock the 80cm Guided Torpedo.
# Atomic Engine Alpha

Kill 100 Destroyers to unlock the Atomic Engine Alpha.
# Atomic Engine E

Kill 500 Destroyers to unlock the Atomic Engine E with the following stats: Output: 22,000, Weight 600.
# Charged Particle Gun 3

Kill 100 Battleships to unlock the Charged Particle Gun 3.
# Enigmatech Atli Hull

Kill 100 Submarines to unlock the Enigmatech Atli, with the following abilities: Top Speed +10%, Rudder Response +1, Control Ability +25%, Endurance +500.
# Twin Hull Battleship

Kill 500 Transports to unlock a Twin Hull Battleship.
# Twin Hull Cruiser

Kill 100 Transports to unlock a Twin Hull Cruiser with a 10,000 ton weight limit.
# Wave Gun

Kill 100 Superships to unlock the Wave Gun. It has the following stats: Offense: 18,000, Range: 20,000, Weight: 4,000, Reload time: 1,000, Ammo: 5.
# Xbattlecarrier

Kill 999 Transports to unlock the Xbattlecarrier.