Mighty Mo’s fire room
The four fire rooms aboard the Iowa-class fast battleship USS Missouri (BB-63) contain eight Babcock & Wilcox M-Type water tube boilers that operated at 600 pounds per square inch with a maximum super-heater outlet temperature of 875 °F. Steam was normally transmitted to four engine rooms numbered 1 to 4.
Each engine room was aft of its associated fire room. At normal cruising speed, steam was transmitted to the four engine rooms using four boilers–sufficient to power the ships at speeds up to 27 knots. For higher speeds, extra snipes poured in and all eight boilers were lit– allowing her to touch 32 knots at full load and broach 35.2 on a light one. Not bad for a ship with a standard displacement of 45,000-tons.
The propulsion plant on Iowa and Missouri consisted of four General Electric cross-compound steam turbine engines, each driving a single shaft and generating a total of 212,000 shp. (Turbines for New Jersey and Wisconsin was provided by Westinghouse).
Although on the Navy List from 29 January 1944 to 12 January 1995, she was in commission for only 16 years– high mileage for her class– though she did earn 16 battle/service stars, dropped steel rain on the heads of Japanese, North Koreans and Iraqis alike, and hosted the surrender ceremony that ended WWII.
Since 1998, she has been moored overlooking USS Arizona in Pearl Harbor, the Omega to her Alpha. On eternal watch over Battleship Row.