The text I have shows the Texas limping along at 21kts. (Not the 33kts of the Iowa class). Carriers then might make 20knots. What gives?
The old Interwar Yorktown-class carriers had a top speed of 32 knots. The Postwar Midway-class had a top speed of 33 knots. Even the first proper carrier the US had, the Lexington, made 33 knots.
The Saratoga (CV-3) was capable of 33 knots. Only the Iowa Class of battleships were capable of keeping up with the carrier fleet.
http://en.wikipedia.org/wiki/USS_Saratoga_(CV-3)