Was there any special planning of the bombing of pearl harbor?

Answer 1

Yes. Peal Harbor was not very deep. The torpedo bombers had to train how to drop a torpedo such that it would not go too deep and hit the bottom. The Japanese had an device on the fin that helped it return to the top. The US Navy did not solve this problem for a few more months.

They also practiced viewing through a replica bomb sight so they could get familiar with the out line of the harbor and the shapes of the battleships and aircraft carriers.