Harry, a few posts back you commented that the Zumwalt had IPS drives.

If you are thinking IPS Pod type propulsion drives like those introduced
by Volvo Penta and Zeuss, you have it confused.

"IPS" on the Zumwalt stands for "Integrated Power System" and refers to
the electrical systems required for all operations and systems,
including propulsion. It has nothing to do with how the ship is
actually driven.

The Zumwalt has conventional propellers and rudders.