:hmm: I had the same problem after screwing around in mid patrol (save) and was toying with the SH3cmdr Crew function. when I loaded up it CTD when I pressed one of the pre-set Crew positions (Submerge attack for example)
maybe you should try the save when ur back in port(the ''In base, before patrol''. that would do fine, and mostly its just a small loss but the convoy will appear again if you do about the same route
