The multish4.zip file you have requested: Utilities / MultiSH4 - 281.14kb is not available. Perhaps try browsing all files for the game Silent Hunter IV: Wolves of the Pacific and upload any files you want to share or are missing. This is the only information we could locate:
This utility allows you to change the default folder that SH4 saves carear data in. This is usefull if you have multiple install folders with different mods or just wish to have multiple carears in different subs or what have you.