I only found one bunker, and based from your description it should be the second one...Which pirate bunker is the question.
- the first (the small one with a krane and a litle door)
(just go there , go to the door and then you oly need to create a device which lets you in)
(in the first room to the left there is the opener forthe crashed vehicle BNUT you need to seethe mesages first in the computer)
- or the seonc with the landing pad ?
(for this Yukari must know about the ifrts pirate base. If you are already in free roaming mode just talk with her about beering restrained [this will unlock the robot] abnd then talk to her again about th secojnd pirate bunker)
Where is the first one located? I patrolled the whole island multiple times without never noticing it