Maybe this is not specific to GFO but..
Uboat 1.5, GFO, Real Environment (for stock), and a few of my mods (just images and cosmetic changes to the cameras.dat [scope parameters])
I have saved this game while underwater and with what looks like 3x destroyers approaching on the horizon.
Anyway, saving the game on any contact, I moved into position.. slightly out of position, I hit reverse engines.. and CTD.
OK.. reload and pickup from the last save.. No problem until I reverse engines.. CTD.
Anybody had similar problems

Oh I'm playing this on a Laptop, Acer Travelmate 5720 (2GB dram), with an ATI Radeon 2400XT GCard
I have a previous saved game on the surface with nothing around, but just wondering if Reversing Engines is common to CTD?