Ned Up !

I'm just syrf'n USA and seen allot here in ships.
Most WWII era US Navy surface warships had 600psi superheated plants with M type separately controlled superheater boilers. Drum pressure and steam temperature were controlled by different sets of burners.
Most 1948-1970 era US Navy warships had 1275psi superheated plants with D type uncontrolled superheater boilers. Steam temperature was a function of firing rate and was around 975 F maximum.
Most US Navy nuclear submarines and surface warships have saturated secondary loop steam systems.
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