Whoops, realized I didnt finish my last sentence (wife was bugging me to do something or other at the time).
In an absolute emergency, the Iowa class battleships are capable of stopping in as short a distance as 600 feet from flank speed (34 kts). They do this by pushing the engines to full reverse and closing the twin rudders in what they called a "barn door" maneuver. Basically, the rudders can rotate independently of each other, and they swing them both inwards like closing a barn door. The only time it was tried (cant remember off hand which ship it was that tried it) they said everything that was not nailed down was plastered against the forward walls and bulkheads. When drydocked for inspection before mothballing, that ship was also the only one that showed a problem with loose rudders lol.
Two bits of trivia also for battleship lovers, unique to the Missouri............
While she was the 3rd of four Iowa class battleships built, she was the last commissioned, making her the youngest of the group.
Battleships are named after states. Normally the Governor of each state's namesake got to pick who christened the ship. However, the Missouri was completed in an election year, and Missouri's Gov. was Republican. Roosevelt wasnt.

So Roosevelt picked the person to christen the Missouri: Margaret Truman (Harry Truman's daughter).
This is a good site for pics of the ship and some data also.
http://www.navsource.org/archives/01/63a.htm