According to the Pennsylvania's log from that day, at approximately 0907, a bomb from a high altitude bomber hit the "Penny". "The bomb hit on this vessel was made at frame 83, starboard side of boat deck, and believed to be a 500 pound bomb. Casualties occuring from bomb hit are listed below:" and the log goes on to list all the casualties, including Phillip Tobin's name. That was written by Lt. (jg) R.A. Phillips at about noon the day of the attack.
Now I do have another account written by Captain Charles M. Cooke Jr, the ships commanding officer. It was written on Dec. 16th to the Commander-in-Chief, U.S. Pacific Fleet. It goes into GREAT detail about the bomb blast and the destruction it wrought. I can transcribe this on to here if you think if would be helpful. It doesn't give any particular names as to where the dead were found, but it does give the areas and compartments they were found in. Very informative.
Let me know if you would like me to post this.