Which boat(s) are you driving VIIC1941? Where are you starting from? Good, clean SH4 install, emptied "My Documents / SH4" (or whatever) Save folder, etc, prior to FotRSU v0.80 activation? No other mods other than FotRSU? Also, do your circumstances include a "Crash Dive!" as the reason for the 9 knots while submerged? Or were you chasing down a targetThanks