Titanic's Turbine Room was located between the Electric Machinery Center and the Reciprocating Engine Room. The turbine engine used the last 9 pounds of steam pressure exhausted by the reciprocating engines and improved the efficiency of the ship 15% by transferring that to a center propeller. The big square openings on the upper sides vented the final steam to the condensers at 4 pounds pressure.
Wreck[]
The turbine room was heavily damaged during the break-up and subsequent descent of the stern section through the water column. The condensers were crushed against the turbine and interior sections of the condensers can be found in the debris field.
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Turbine Engine Room deck plans on E.T. Ignore the red arrow.
Turbine Engine Room (from some titanic project game on roblox)