Grand Theft Auto: San Andreas Walkthrough

Woozie tells CJ that he's got a big job to seal his legacy forever. He needs CJ to take out the Da Nang boys who are arriving on a container ship.

Once in the helicopter, watch for the approaching ship. As you get close, fire and take out as many of the guards as you can.
You'll get shot down by the RPG into the water. Swim to the red marker and CJ will climb up the ladder. Creep up on the guard facing away from you and knife him.
Climb up the boxes to the next level. There will be 2 guards facing away from you. Sneak up on them and knife both of them.
Follow the yellow blip on your radar and press forth. Drop down off the boxes and climb up the next side. As you round the corner, be careful of the 3 guards waiting with guns. Take them out with any weapons you might have picked up. Another guard will round the next corner.
Down the hallway and around the next corner are 2 more guards. If you need the health, a spinning heart will be in a crevice to your right.
Round the next corner and take out the guard down the walkway.
More guards will be waiting in the opening between the platforms. As you approach them, aim down so you're ready to fire.
Rounding the next corner, you'll drop down onto the next platforms. An opening in the middle of the walkway will lead to a bottom deck. Drop down and walk into the red marker.
Many guards will be waiting for you. They'll begin to run up on you from the opening straight ahead shoot them. If you need it, a body armor is hidden all the way to your right. Climb over the boxes to look down inside.
Follow the path along. As you round the next corner, a guard will be waiting for you on your right side.
Once he's gone, be careful as a guard will be hiding behind you to the left and around the next corner are several more.
Take out the guard down the long hallway. He'll have a red blip over his head.
Once he's dead, free the refugees by targeting the lock on the container.
Now, it's time to take out the Snakehead leader on the bridge. Head back to where you started and climb up the boxes to return to the main deck level.
Continue to climb up the boxes, being careful of the guard waiting by the door leading to the bridge. Once he's killed, head inside and up the stairs. Kill the 2 guards at the top of the stairs. The Snakhead awaits at the top.
You'll be given a katana sword. Kill the Snakehead and head back outside to the refugees, who are near where you dropped down to the lower decks. Greet them and you've passed the mission.