|Codes of color explanation|
|Fuel bunkers (diesel oil)||Main fuel bunkers (heating oil)||Main fuel overflow bunkers|
|Port diesel motor room||Port shaft tunnel||Centre shaft alley|
|Starboard shaft tunnel||Starboard diesel motor room||Electric plant No 2|
|Centre turbine room||Electric plant No 1||Electric switch gear room No 2|
|Port shaft alley||After A.A. and damage control room||Starboard shaft alley|
|Electric switch gear room No 1||Port turbine room||Starboard turbine room|
|Control platform boiler room||Port No 1 boiler room||Centre No 1 boiler room|
|Starboard No 1 boiler room||Boiler auxiliary machinery room||Port No 2 boiler room|
|Centre No 2 boiler room||Starboard No 2 boiler room||Electric plant No 4|
|Auxiliary machinery room||Electric plant No 3|
| 3 sets geared turbines (Curtis type) with single reduction: in three turbine rooms
(Bismarck: Blohm & Voss, Hamburg; Tirpitz: Brown, Boveri & Cie).
|Turbine sets in four housings, turbines/propellers rpm:|
|High-pressure (HP) turbine||2,880/270|
|Intermediate-pressure (IP) turbine||2,880/270|
|Low-pressure (LP) turbine||2,430/190|
|High-pressure astern turbine||2,025/180|
|Low-pressure astern turbine||1,715/190|
|The HP astern turbine was contained with the IP ahead drum, the LP ahead and astern turbines were grouped together.*|
|Performance weight of entire drive||20.3 kg/hp|
|Main drive||Three shafts with three-bladed propellers 4.7 m in diameter|
|Steering assembly||Two balanced-type rudders with 8° divergence towards centreline|
| *There are a number of differently constructed types of turbine for differing applications, viz. the Parsons multi-stage reaction turbine; the Laval impulse turbine with one pressure and one velocity stage; the Curtis velocity-compounded impulse turbine with one pressure stage and multi-velocity stages; and the Zoelly impulse turbine with multi-pressure stages, basically similar in construction to the Curtis. Shipyards or other manufactures supplying turbines did so mainly under license.
In Bismarck the individual turbine sets were grouped round the gearing. The HP reaction turbine was a Curtis wheel with 40 stages, the IP a double-flow 14 stage reaction turbine and the LP a 9 stage reaction turbine supporting the condenser slung below it, as was customary. The HP astern turbine was a single Curtis wheel, the LP astern turbine was of the divided double-flow type. No cruising turbine was fitted.
In Tirpitz the individual turbines were similar to those of the Bismarck except that the ship was fitted with crusing turbines; the crusing and HP drums were both set at the after end of the main wheel; the IP and LP were simple reaction turbines; and the HP astern turbine was contained in the IP ahead drum at its forward end and the double-flow LP astern turbine was located between the LP turbine block.
|Output (shp)||No of boilers in use||Shaft (rpm)||Speed (knots)||Fuel consumption (gm/hp/hr)|
|3 x 46,000||12||265||29||325|
|3 x 38,350||12||250||320|
|3 x 23,300||9||214||335|
|3 x 13,000||6||176||370|
|3 x 8,300||3||151||415|
|3 x 5,000||3||128||500|
3 x 12,000 (astern)
|Machinery data for Tirpitz|
|Output per shaft||Shaft rpm||Steam comsumption (t/hr)|
© John Asmussen, 2000 - 2013. All rights reserved.