This mission is the first of the steps requires to disable a new prototype U-Boat by the germans. As with the previous mission, it involves stealth - you will be given papers to convince the lower ranks that you are supposed to be on the boat, but the officers (recognized by a larger hat) will easily see through the ruse. When you get detected, you will need to kill any alerted enemies, and disable the alarm.
Gain Access to Promenade[edit]
From the cargo room, head to the main corridor, and turn left. Enter the last cargo area on the right, where an officer walks back and forth. Kill him with a silenced pistol, and collect the pass he drops.
With this pass, you can head down the side corridor on the left of the main hall, and present your papers to the guard. This opens the door.
Gain Access to Bridge[edit]
When you enter the promenade, turn left, and enter the first side room. An officer patrols here, and will drop the pass to the bridge.
Exit the side room, and head to the right. Present the pass to the guard at the door, and the door will open.
Find Wrench[edit]
When you reach the bridge area, climb the ladder, and proceed forward until you can cross to the right. There is an officer on patrol here, which you can avoid, but it may be easier to kill him regardless.
At the other end of the ship, turn left. The wrench is located in the alcove.
Gain Access to Engineering[edit]
In the main section of the bridge, you will see an officer, who will turn towards you when you enter. He carries the pass to engineering.
When you obtain the pass, return to the promenade, and head to the other end of the corridor. The guard will let you through when you present the pass.
Jam Engine[edit]
In engineering, you can head to the engine by taking the first door on the right. Approach the engine, and drop in the wrench when prompted. You may need to engage a few enemies when you do so.
To return, climb under the horizontal shaft, and ascend the ramp.
Exit Ship Through Cargo Hold[edit]
The cargo hold is found in the first corridor from where you started the mission. It is found on the left, and is a simple door.
There are two enemies on the other side of the door that attack.