This device is designed to maneuver the ship at low speeds in ports when the main propeller cannot provide maneuverability at low speeds. During the attack on USS Stark (FFG-31), when the stationary frigate was hit by two anti-ship missiles, this device could help turn the ship in place so that the missiles were in the Vulcan Phalanx sector of fire. But that didn't happen...not side thrusters as would have been installed into the sides of the bow for sideways motion. look at Sheet 12 Hold as they are apu 1 & 2 for use if the main prop stops working for whatever reason.
You are wrong. They really rotate around their axis. But there are clear recommendations for their use from NAVSEAi don't think the apu's can rotate as distance between the 2 is not great enough that they don't interfere with each other. i think they can only go forward & reverse as they are emergency propulsion units.
I agree JJ..You are wrong. They really rotate around their axis. But there are clear recommendations for their use from NAVSEA
Handling the FFG-7