Naval Ops - Warship Gunner cheats and cheat codes for Playstation 2

Unlimited money
Go to the dock screen, after enter 
Left, Left, Right, Right, L2, R2, R1, L1, Square, Triangle.

Higher speed
Press Up on the D-pad many times.

Unlock weapons:
Atomic Engine Alpha: Destroy 100 Destroyers
Atomic Engine E: Destroy 500 Destroyers
Charged Particle Gun 3: Destroy 100 Battleships
Enigmatech Atli: Destroy 100 Submarines
Twin Hull Battleship: Destroy 500 Transports
Twin Hull Cruiser: Destroy 100 Transports
Wave Gun: Destroy 100 Supership
Chain Gun: Destroy 100 Aircraft as the Japanese
CIWS: Destroy 100 Aircraft as the Americans or Germans
Chain Cannon: Destroy 500 Aircraft as the Japanese
60 Caliber Deck Gun: Destroy 100 PT Boats
Guided Torpedo: Destroy 100 Cruisers