this post was submitted on 26 Mar 2024
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Dude. Backup power. Backup generator in a fire rated room. You didn't understand my previous rant. Batteries and UPS and generators. If your main power fails you have Backup generation sometimes even redundant Backup generators with interlocks and load shedding to keep life safety online. But it is a moot pointthe issue here is we don't have a good way to stop a huge boat with no power. This is more an industry blindspot than anything I see now.
These ships aren't running a little electric prop that you can just route power to: it's a massive diesel engine that needs to be capable of outputting thousands of pounds of torque constantly. It's also a ship, in water, dealing with tides, currents and wind. There is no turning it or altering course without main engine power to move the ship relative to the water to make the rudder effective. Some large ships have steering screws that they can use to slip the ship sideways, but they are meant for minor corrections and maneuvers in calm water and have limited uses.
Do you really need main engine power to turn the rudder?