"On December 7th, 1941, there were twenty one submarines attached to the U.S. Pacific Fleet based in Pearl Harbor: six V class, three of the P class and twelve T class subs although only eleven boats could actually be considered available for combat operations. Four were in Pearl Harbor at 7:55 am when the Japanese began the attack. The USS Narwhal, Dolphin, and Tautog were tied up at the sub base finger piers while the USS Cachalot was in the navy yard for repairs. As the first bombs began to fall on Ford Island Naval Air Station, the crews of the moored subs sprang to action and began firing on the Japanese torpedo bombers tracing their way to Battleship row (The USS Tautog is credited with downing a Japanese Kate bomber). By 10 o'clock, the attack was over. The submarine base survived undamaged, although a crewman was wounded during a strafing run."
I took the above from this source:
http://www.valoratsea.com/subwar.htm
Now this would be exciting MP and SP.