USS Iowa - Engine Room No. 2

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The ship has four engine rooms each with one General Electric steam turbine engine connected to a propeller shaft through a double reduction gear. The reduction gear reduces high turbine speed to low propeller speed.

The engine consists of two turbines: High pressure (HP) and low pressure (LP). On each end of the LP turbine are a set of smaller turbine blades of opposite pitch to provide astern propulsion.

Two turbo generators in each engine room generate 450 volt, 3-phase 60 Hz AC electricity for the ship's 440/110 vac electrical needs.