damage control help

[coreykill]

hi im kinda new to subsim ive used it for modding SHIII as ive played it the last few years but i recently got SH4 gold version....well a few nights ago i sat down and started playing, the u-boat missions anyway during the first mission i decided to set my sights on midway harbor....long story short im lurking underwater with destroyers circling over my head when from the back i hear "we have critical flooding sir" well i immideatly pulled up the damage screen and to my horror my stern is rapidly becoming the scary shade of blue....well after frantic clicking and much head scratching i realised i have no idea how this new damage control works....i even went so far as to download the manual and much to my dismay it has all of two lines of text on the subject....not very helpful....im wondering if someone would take the time out of their busy life to help me....perhaps making a short list of detailed steps for repairing something eg. a bulkhhead..... i would really appriciate it guys.....feel this is about the only place i can ask this kind of question and maybe get an awnser