The basic abilities stuff is in the Data \UPCDataGE \UPCCrewData folder, between the CrewMembers.upc and SpecialAbilities.upc files. However, SH5 can "modify" those somewhat with the various Data \Scripts \AI folders files, along with the Capaigns \CampaignProjects various folders and files with *.aix extensions. Various modders have attempted to tweak some of those files, and had some success, some failures, and some disappointments... the usual when attempting to mod anything Silent Hunter... lol