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impedance problem in suez canal

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coppice:

--- Quote from: Kleinstein on March 29, 2021, 07:08:30 pm ---
--- Quote from: coppice on March 29, 2021, 06:06:24 pm ---
--- Quote from: Red Squirrel on March 26, 2021, 07:20:16 pm ---I'm no naval engineer but it seems to me there should be a rule of thumb that you don't try to enter a body of water that is narrower than the length of the ship.  In perfect conditions as long as ship stays straight I guess it's fine but in this case they definitely got themselves in a kerfuffle and jackknifed her good!   We're gonna need a bigger tugboat.

They'll probably need to bring in a large dredging ship or similar to try to get it out I imagine.   

--- End quote ---
Whether they are seawater canals for huge ocean going vessels, or inland canals for vessels specifically designed for canal only use, it has always been normal for canals to carry ships longer than the width of the canal. Canals cost serious money. Making them any wider than is necessary for 2 vessels to pass each other safely would make most of them too costly to be viable.

--- End quote ---

Some canals are not even wide enough that 2 of the larger ships can pass. So they have to operate at last parts in one way mode. This is the usual way for the suez canal. They are in the process to widen the longer northern part, so that they can go both directions at the same time, at least for that part.

If the ship is much longer than the canal is wide, the ship can not longer so large an angle to hit the banks - so it gets a little safer. The ship was not too long - it was too short. :-DD

--- End quote ---
Yeah, its common for there to be canal sections, over things like viaducts, which operate for a while in one direction and then a while in the opposite direction, to minimise construction costs. There are also spots geographically constrained for width which are one way at a time. Locks, except in the busiest location, are usually one way at a time. The local canal where I was a kid had an odd arrangement of double locks for some locations interspersed with single locks for others. I guess when the system was first built some sections were expected to have massively more traffic than others.

harerod:
Applying Cunningham's law: As so often with Japanese humor - I don't get it. So I will post a possibly wrong answer and hope to be corrected.
"バズった怪しい研究" - "(their) Weird experiment went viral"
"間違いの指摘" - "(now they are) pointing out (someone else's minor) mistakes"


Why bother putting this picture here? Well, I hate total surveillance. I mean that could have been me, a quarter century ago. Working in a place with lots of sand, the next toilet 1 kilometer away, 50°C. "Don't get caught, it is considered very offensive.", the colleagues said. Man-sized tires make a great target, though.

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