I was on the Triumph sometime ago. It is a total electric drive ship. There six 10 MW generators for propulsion and auxiliaries. The toilets flush by vacuum and use very little water. The flush stuff is all handled by vacuum because there is not enough fall to slope the pipes.
Fresh water is produced by either vacuum distillation or reverse osmosis. Large amounts of power are required for meal preparation, refrigeration, and lighting. Emergency generators are located very high on the vessel, but because they are above the center of buoyancy introduce a large rolling moment.
It would certainly make sense to completely isolate and compartmentalize the propulsion generators, switch gear, support services etc to provide complete redundancy. I have to believe that is done to some extent. Very large container ships and crude oil carries have only 1 direct drive diesel. When it goes down it is tow time.
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Today's Featured Article - Old Time Threshing - by Anthony West. A lovely harvest evening late September 1947, I was a school boy, like all school boys I loved harvest time. The golden corn ripens well and early, the stoking, stacking,.... the drawing in with the tractors and trailers and a few buck rakes thrown in, and possibly a heavy horse. It would be a great day for the collies and the terrier dogs, rats and mice would be at the bottom of the stacks so the dogs, would have a busy time hunting and killing, all the corn was gathered and ricked in what we c
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