Chief of Staff. Battleships are designated BB because (Insert corny EU2 Joke here) they are the bad-boy's of the sea.

Why are carriers called CV?

"The Langley CV-1 ('CV' standing for "carrier vessel" and '1' referring to the first ship laid down) was the U.S. Navy's first carrier, entering service in 1922," said the book, on Page 20 of 141.

What does BB 64 stand for?

By the way, BB‐64 stands for the category battleship and the number assigned. ... On July 6, 1939, the US Congress authorized the construction of the USS Wisconsin. It was built at the Philadelphia Navy Yard. Its keel was laid in 1941, launched in 1943 and commissioned on April 15, 1944.