While I'm waiting on my copy of SH5, I'm reposting these for the new guys that may find these usefull. Were originally posted in the Silent Hunter 4 Forum.
These can be printed out and laminated and used for a more relasic experience when using manual TDC and 100% realism settings.
AOB Calculator

Download is here:
http://www.subsim.com/radioroom/down...o=file&id=1226
Mirror:
http://rapidshare.com/files/28301609..._Printable.rar
IsWas Calculator

Download is here:
http://www.subsim.com/radioroom/down...o=file&id=1285
Mirror:
http://rapidshare.com/files/28301640...Calculator.rar
Also Gutted has done an excellent software version (Solution Solver 1.3.2)
Thread is located here:
http://www.subsim.com/radioroom/showthread.php?t=156698
He has made the source code availabe as open source for those interested at:
http://www.subsim.com/radioroom/showthread.php?t=162478