Captain Smith had nothing to do with the accident with the Hawke, The sheer size of these vessels was the problem. The massive suction created by the propellers pulled the Hawke into the Olympic!. As a matter of fact, it was found that after Titanic left Southhampton, A sunken bardge was dragged 800 yds across the bottom of the channel. Of course this was not found out until much later after Titanic sank.As far as Captain smith's record was ,yes there were minor problems, but on the whole when asked about his career, he said "I have been at sea for 30 years and I haven't had an incident that is worth speaking of " Most people have skeletons in their closet. Nobody is perfect!
Now As we all seem to know, He definately used bad judgement in listening to Ismay, if that is what he did. Of course WE will never really know the whole truth.