My last exploration, S rating, no violent turbulence and yet didn't unlock sector 8 at rank 29.
But I'm not worried though because I know this is just another SE RNG crap and nothing I can do about it.
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In case someone hasn't mentioned this yet, experience needed from rank 35 -> 36 is 295,384.
http://i.imgur.com/mwUIHO8.png
EDIT:
In the Airship Logs spreadsheet, under the Ship Builder tab, the formulas for the Forecastle are wrong (currently show the stats for the same tier as whichever Aftcastle is selected).
The Forecastle column formula should be:
instead of:Code:=iferror(index(filter('Ship Parts'!$D$2:$I,'Ship Parts'!$A$2:$A=E$3,'Ship Parts'!$B$2:$B=E$2),1,row($B6)-row($B$5)),0)
Also, the Build Points formula in G3 needs updating as well.Code:=iferror(index(filter('Ship Parts'!$D$2:$I,'Ship Parts'!$A$2:$A=F$3,'Ship Parts'!$B$2:$B=E$2),1,row($B6)-row($B$5)),0)
Should be:Code:=concatenate(sum(iferror(index(filter('Ship Parts'!D2:D,'Ship Parts'!A2:A=C3,'Ship Parts'!B2:B=C2),1,1),0),iferror(index(filter('Ship Parts'!D2:D,'Ship Parts'!A2:A=D3,'Ship Parts'!B2:B=D2),1,1),0),iferror(index(filter('Ship Parts'!D2:D,'Ship Parts'!A2:A=F3,'Ship Parts'!B2:B=E2),1,1),0),iferror(index(filter('Ship Parts'!D2:D,'Ship Parts'!A2:A=F3,'Ship Parts'!B2:B=F2),1,1),0))," / ",11+B3)
Code:=concatenate(sum(iferror(index(filter('Ship Parts'!D2:D,'Ship Parts'!A2:A=C3,'Ship Parts'!B2:B=C2),1,1),0),iferror(index(filter('Ship Parts'!D2:D,'Ship Parts'!A2:A=D3,'Ship Parts'!B2:B=D2),1,1),0),iferror(index(filter('Ship Parts'!D2:D,'Ship Parts'!A2:A=E3,'Ship Parts'!B2:B=E2),1,1),0),iferror(index(filter('Ship Parts'!D2:D,'Ship Parts'!A2:A=F3,'Ship Parts'!B2:B=F2),1,1),0))," / ",11+B3)
To add to the loot table: also Heaven's Eye Materia III from Sector 12
http://i.imgur.com/DFL8yO6.png
Finally unlocked sector 8 at rank 30, A rating with experiencing violent turbulence.
So apparently violent turbulence or not has nothing to do with unlocking sector.
I have a question.
Currently our airship is using Bronco parts. If we changed to Invincible, will the Bronco lost?
Sector 16/17 update
http://i.imgur.com/IZ7qVjR.png
http://i.imgur.com/HM3kBCv.png
It is possible to obtain the same item twice from the same sector on the same voyage. We found 11 Red Clay and then 7 Red Clay in sector 7. We discorvered both sector 8 and sector 13, after 3 weeks of searching for sector 8 (airship at rank 34 and full enterprise). Unlocked tier 5 airship parts (Odyssey) aswell. That is what I call a comeback :D