Bingo! from the Pearl Harbor Damage Report:
An effort was made to determine the number, type and location of hits received. However, since floors, bulkheads, framing etc., buckled as the port side of the hull was pushed inboard, due to various reasons in addition to the actual torpedo and bomb explosions, the appearance of the initial damage was changed before a visual examination was possible. Some possible causes of this additional damage are listed as follows:
(a) The depth of the water where the OKLAHOMA was moored was about 40 feet or less and the possibility exists that pressure waves from the exploding torpedoes and bombs may have reflected from the harbor bottom and caused additional pushing in of the port side.
(b) Some pushing in of the port side may have occurred when the vessel capsized and rested on the harbor bottom.
(c) It is believed that during the righting process which employed mechanical forces to pull the vessel right side up, the enormous pull exerted on the vessel plus the weight of the vessel itself turning on solid harbor bottom caused general pushing in of the already weakened port side. This damage is referred to in this report as "rolling over damage".