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Originally Posted by rrmelend
The 2 engines you have out are probably on one side of your boat and operate one of your 2 screws. When this happens it is impossible in the game to control the other screw all by itself  . Basically you're out of luck. If the 2 damaged engines are beyond repair your only option is to either start another career or load a saved game. |
That would be true if the engines turned the screws. Maybe they do in u-boats, but they don't in fleet boats. US engines had a single function, turning a generator, the screws were turned by separate electric motors.
You should have full control of both screws with even one engine.
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D. SUBMARINE DIESEL ENGINE INSTALLATIONS
1D1. Submarine diesel engine installations. Figure 1-14 shows a typical main and auxiliary engine installation aboard a modern, diesel-electric drive, fleet type submarine. Each engine is coupled with a generator to form a generator set. Through the main control cubicle, the current supplied by main generator sets may be directed to charging the batteries or powering the main motors. The auxiliary generator set may be used directly either to charge the batteries or to power the auxiliary equipment. It may also be used indirectly for powering the main motors. Main motors are used for propulsion and may be powered either by the batteries or by the main generator sets.
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2A1. Description. The propellers of a modern submarine are driven by four main motors (see Figure 2-1.) arranged in pairs to drive each propeller shaft through a reduction gear, or by two double armature main motors which are coupled directly to and operate in the speed range of the propellers.
Each gear unit used in a gear drive installation is a single reduction, double helical type designed to reduce the main motor speed of approximately 1300 revolutions per minute (rpm) to the propeller speed of 280 rpm.
Power for driving the main motors is obtained from one of two sources: the four main generators driven by the main diesel engines; or, for submerged operation, the main storage batteries.
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Fleet boats are true diesel-electrics. There is no physical connection between the diesels, and the shafts.
tater