Originally Posted by Kernow
Always been an admirer of old battleships too but wondered why the Iowa class were so slow compared to British battleships of the same age?
The Iowa class battleships were intended to support the Essex class carriers (in addition to other duties) the U.S. was building at the time. they were to give close anti aircraft support to these carriers which also were pretty heavily gunned ( 5 in. 20, 40 mm) These battleships had to be fast enough to stay with the carriers and they were, normal operation being 31 knots to a theoretical high of 35 knots lightly loaded. Carriers made about 33 knots so the Iowas speed was adequate.
Compare this to the Yamato class (two ships) 27 knot speed and to the 28 knot speed of the King George class and you could hardly call the Iowa class
Britains planned Lion class battleship would have compared favorably with the U.S. ships but they were never completed. At the end of the war the carrier had changed Naval warfare forever...