- "Alright, Woozie, relax. Don't beat yourself up about it. Look, I'll do it. Uh, one last thing. You do know that I'm black, right? And not Chinese."
- — Carl Johnson.
- "I'm blind, Carl, not stupid."
- — Wu Zi Mu.
Amphibious Assault is a mission in Grand Theft Auto: San Andreas given to protagonist Carl Johnson by San Fierro Triads leader Wu Zi Mu from his apartment in the Chinatown district of San Fierro, San Andreas.
Note: This mission can only be accessed from 20:00 to 6:00 in-game.
Woozie tells Carl he can't swim. He easily panics just thinking about the water. Because of this, he won't be able to do something he's been planning: swim to a Da Nang Boys-owned ship out at San Fierro Bay and plant a bug in it. So instead, he wants Carl to do this. CJ first disagrees with the idea, narrating a humorous story he was involved in back in his childhood, making him somewhat afraid as well. However, once Woozie admits that he's blind, and would not be able to use his other senses in the water, Carl agrees to do the task, feeling some sympathy for Woozie.
Carl makes his way to Esplanade North, near Pier 69. Once there, Carl dives to the water. He first navigates through a rock formation. Afterward, he sees and avoids the Da Nang Boys patrolling the ship and the sea in Tropics. He also avoids the search lights planted on the tanker. As he arrives at the freighter, he quietly makes his way to the back of the ship, either by avoiding the guards' attention or by killing them. He eventually arrives at the back of the ship, and plants the bug. He then quickly gets out of the ship, and swims back to a dock in Esplanade North.
In order to complete the mission the player must:
- Get to the docks
- Swim to the tanker and get aboard
- Sneak to the back of the tanker and plant the bug, be as quiet as possible to avoid the attention of the guards on onboard
- You have planted the bug! Get off the tanker and back to the docks
- If the player has not yet improved their lung capacity enough, a special cutscene would be triggered. While playing on the CJD 500, Woozie asks Carl if he can swim well; Carl responds in disagreement. The game would then tell the player to improve their lung capacity by diving underwater for the mission to be continued normally.
- The cheat to increase lung capacity does not work if the player has not already increased their lung capacity. However, it will aid the player in increasing lung capacity as the bar never decreases, giving the player as much time as they need to increase the lung capacity while swimming.
- Although the player should have swum for a while before beginning the mission (thus knowing a bit about swimming), the mission still teaches basic swimming skills, such as diving, getting back breath, and climbing out of the water.
- There is fog in the entire state of San Andreas once you jump into the water at the Esplanade until you end the mission, even in Los Santos or Las Venturas.