Submersible Information Thread

[MysticSpirit]

As much as I want to dive into this, I still cannot get Cocobolo lumber, even with a surveillance of 186, from s. zozonan or the wreckage of the windwaker. Everything I can find says I only need 160. Is there more to the trick?

The lowest surveillance to obtain cocobolo lumber is 145 (Sea of Ash 1). So your surveillance is high enough. Your Favor should be minimum 145 (or 175 if you go for sector 40+) to increase drop chance, becuase it gives a chance to douple dip the sectors.
There are not much else to do but pray to RNGesus. The drop rate is around 8-10% if I remember correctly so it takes a while.