NOTE: Watch this tutorial in HD 720p.

PART 1/2

http://www.youtube.com/watch?v=LiXkwwEcXic

PART 2/2

http://www.youtube.com/watch?v=MSsdckpciS4

[1] Hull
Zombies must destroy the hull on the underside of the ship to activate the objectives.

[2] Titan doors / Flood doors
After the zombies have breached the hull, activate the three levers in the radio room.

[3] Radio
Continue to defend and activate the radio when available.
Hold out until the helicopter arrives.