Nintendo Entertainment System · cheat codes
Silent Service cheats & codes
22 codes for Silent Service on the Nintendo Entertainment System, including Game Genie codes.
Silent Service Game Genie codes
How to use: Galoob's Game Genie plugged in between the console and the cartridge. Type the codes in on its start-up screen, then press Start. In emulators, add them through the cheat menu and choose the Game Genie format if asked.
| Effect | Code |
|---|---|
| Start With 50 Deck Gun Shells | ZLEPOIAI |
| Start With 99 Deck Gun Shells | LTEPOIAI |
| Infinite Deck Gun Shells | SZXVOPVG |
| Infinite Bow Torpedoes | SZSVUPVG |
| Infinite Aft Torpedoes | SXETUPVG |
| Increases Max Submerged Speed From 10 To 29 | YXVPUYGP |
| Increases Max Surfaced Speed From 20 To 50 | GUSOXNTO |
| Infinite Battery Power | SZSPKLVG |
| Don't Sink From Depth Charges (Your Sub Can Still Be Damaged, But You Won't Sink) | SXOPUGSA |
Silent Service Other codes
How to use: Additional codes collected by the community. Enter them through your emulator's cheat menu, choosing the format that matches your emulator.
| Effect | Code |
|---|---|
| Increases max submerged speed from 10 to 29 | YXVPUYGP |
| Increases max submerged speed from 10 to 39 | PUVPUYGP |
| Increases max surfaced speed from 20 to 50 | GUSOXNTO |
| Infinite battery power. | SZSPKLVG |
| Don't sink from depth charges | SXOPUGSA |
| Start with 50 deck gun shells | ZLEPOIAI |
| Start with 99 deck gun shells | LTEPOIAI |
| Infinite deck gun shells | SZXVOPVG |
| Infinite bow torpedoes | SZSVUPVG |
| Infinite aft torpedoes | SXETUPVG |
| Invincibility | 00E2:00 |
| Infinite Deck Gun | 00D1:63 |
| Infinite Bow Torpedoes | 00CD:09 |
Using cheats today
Original cheat devices like the Game Genie, Action Replay and GameShark still turn up second-hand and work with original cartridges. Most modern emulators also have a built-in cheat menu that accepts these formats, so you can toggle codes on and off without extra hardware. Codes can differ between regional releases and revisions of a game; if one doesn't work, try the code list for another version.
Cheats can corrupt save files in rare cases, so back up your saves before experimenting.
Silent Service walkthroughs & guides
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Back to Silent Service: is it worth playing?
Cheat codes are from the libretro-database community collection, used under CC BY-SA 4.0; the code tables on this page are shared under the same license. Codes are provided as-is: some may not work on every version of the game.