Career Start April 1942 in Brisbane driving an S-42 class boat.
there are three conning towers available:
original, SClassConning1
mid-42, SClassConning2
mid-43, SClassConning3
the first upgrade was available directly after our first mission.
it took five missions to get it. mission ratings were, in order, 1,0,2,1,1
upgrade took place November 15, 1942 after mission #5.
i also discovered that using jimimadrid's excellent Torpedo Graphics mod with FOTRSU 1.8 works just fine with a Gato, Balao, etc, it causes CTD when you are driving a S-42 Boat. Weird but true. Since those graphics are included in 1.8, it was simple to drop the mod. Not sure why i was using it...probably a vestige of a previous release of FOTRSU.
Generic Mod Enabler - v2.6.0.157
[C:\Ubisoft\FOTRSU\MODS]
100_FalloftheRisingSun_Ultimate_v1.8
101_FotRSUv18_FixPak
200 Nihon Kaigun v1.3_FotRSU
300 Nippon_Maru_v1.9b_FotRSU
310 Combined Roster
399_NoScrollNavMap
410_Strategic_Map_Symbols
600 - 3000 Yard Bearing Tool (1920x)
999 Flotillas Fix for Argo