Editing Montana-class battleship (section)

===Propulsion===
[[File:Montana-Klasse Modell.jpg|thumb|left|Model of the ''Montana'' class]]

The propulsion plant of the ''Montana''s would have consisted of eight oil-fired [[Babcock & Wilcox]] two-drum boilers with a steam pressure of {{cvt|565|psi}} and a steam temperature of {{cvt|850|F}}. The boilers supplied steam to four geared [[steam turbine]]s, each driving one [[screw propeller]].{{sfn|Garzke|Dulin|1995|pp=174–175}} The boilers were vented through a pair of [[funnel (ship)|funnels]] placed on the centerline [[amidships]].{{sfn|Friedman|1980|p=100}} To meet the high electrical loads anticipated for the ships, the design was to have ten 1,250&nbsp;kW ship service turbogenerators (SSTG), providing a total of 12,500&nbsp;kW of non-emergency electrical power at 450 volts [[alternating current]]. The ships were also to be equipped with two 500&nbsp;kW emergency diesel generators.{{sfn|Garzke|Dulin|1995|p=170}}

The turbines were rated to produce {{cvt|43000|hp|MW}} each, for a total propulsive power of {{cvt|172000|hp|MW}}. The propulsion system was intended to produce a design speed of 28 knots at 70,500 tons displacement.{{sfn|Garzke|Dulin|1995|pp=174–175}} The ''Montana''s were designed to carry {{cvt|7500|LT}} of [[fuel oil]] and had a nominal range of {{cvt|15000|nmi|-2}} at {{cvt|15|knot}}. Two semi-balanced rudders were placed behind the two inboard screws. The inboard shafts were housed in skegs, which, while increasing hydrodynamic drag, substantially strengthened the stern structure.{{sfn|Garzke|Dulin|1995|p=171}}

While less powerful than the {{cvt|212000|hp}} powerplant used by the ''Iowa''s, the ''Montana''{{'}}s plant enabled the machinery spaces to be considerably more subdivided, with extensive longitudinal and traverse subdivisions of the boiler and engine rooms. The machinery arrangement was reminiscent of that of the {{sclass|Lexington|aircraft carrier|4}}, with the boiler rooms flanking the two central turbine rooms for the inboard shafts, while the turbine rooms for the wing shafts were placed at the after end of the machinery spaces.{{sfn|Friedman|1985|p=339}} ''Montana''{{'}}s machinery arrangement combined with increased power would eventually be used on the ''Midway'' class.{{sfn|Friedman|1983|p=219}}