Stupid tonnage bar thingy curse will hover over SH5 for many more months to come...
And why do you think that you'll fail all the objectives?
All you have to do is to listen battle orders and sink ships when ever and where ever you want, nothing more and nothing less...
Take look at this post created by Trevally for example, the creator of OHII ...
http://www.subsim.com/radioroom/show...3&postcount=10
You can check patch 4 readme documentation too...