Green Maned Lion
Engineer
Yeah, but given the forces involved, I think any notable impact would cause a leak, and any leak would mean everyone is dead.
I should hope rail is making a comeback. I am an Amtrak fan going back to my first California Zephyr trip from Oakland to Chicago in 1984. Found out in Denver that Vanessa Williams was dethroned as Miss America. Man, did I have a crush on her at the age of 14!!!Dude, take a serious look around. Railroads, and rail transit, are clearly entering a new Golden Age, and the evidence is everywhere if you care to really look. You might start with gasoline prices, the airlines, and urban congestion, and finish with trucking rates. Rail is flourishing right under your nose.Sure, believe me I love the idea of trains and hope they eventually flourish again.
I used to fly a LOT in college after I transferred from UC Davis to the University of Arizona. Even with the shuttle van from Tucson to Sky Harbor Airport in Phoenix, and even with a stop in Las Vegas, it still felt like I was getting back to Oakland very, very fast. I don't think at the time (around '92 or so) it was practical to do Amtrak from Tucson to Oakland because of the scheduling and the routing through Los Angeles Union Station (might be a lot easier now under Amtrak California) so I took Greyhound. It was NICE to actually see how long it REALLY took and how far I was from home.I don't have the same negative feeling toward flying that you and a few other people around here talk about (I actually like it...especially now that I have status, sit in first class, and get waited on hand and foot with unlimited free booze...oops, did I say that out loud? :lol: ), but I definitely agree with your statement that it takes several days to really feel like I'm "there." There is something cool about knowing that 12 hours (and three connections) earlier I was 6,000 miles away from where I was, but once that wears off, it's almost a surreal feeling that makes it hard to really appreciate where you are--like it's fake or that you're in some holodeck or Disney animatronic scene. Traveling on the ground really makes you understand that you are FAR from home!If I just want to get from Point A to Point B as quickly as possible, I'll fly. I hate flying. Otherwise, I'll take a train. For all leisure travel, I think a train or car is necessary. I've taken a few trips overseas - via planes, of course - and it really bothered me. I'm put in an aluminum tube, shaken for a dozen hours, and thrown off the tube, to be told I'm looking at Big Ben, Mauna Loa, or some other site far from my home. For all I know, they dropped me off in Iceland, Timbuktu, or right back where I started from. Frankly, when I fly it takes me several days (if ever) to even feel like I'm really THERE. For me, it defeats the point of getting there quickly.
When traveling by train or car, you actually get the feeling that you're traveling somewhere. It may take longer, but it makes the whole experience more worthwhile - not just the train portion, but the whole trip.
Actually leaks are not that bad, flooding is the greatest danger to the ship. In Sub School we are taught that we will find leaks, but flooding will find us.Yeah, but given the forces involved, I think any notable impact would cause a leak, and any leak would mean everyone is dead
I don't think there has been any accident involving a US Navy submarine in your lifetime where everyone on the submarine died. The only US nuclear submarines that have been lost ever are the Thresher and the Scorpion, and neither of those seems to have involved a collision with anything else.Yeah, but given the forces involved, I think any notable impact would cause a leak, and any leak would mean everyone is dead.
The most recent directly relevant example is the USS San Francisco which hit a seamount head-on at 33 knots (38 mph) in 2005. As seen in Star Trek, the main thing that happens is that anything not tied down goes flying forward in the cabin at high speed and people get thrown out of their chairs pretty violently. Sailors were injured, some badly, and one died, but nobody drowned and the sub was, by and large, structurally fine. Needs hull repairs up front, of course, but she'll sail again.I don't think there has been any accident involving a US Navy submarine in your lifetime where everyone on the submarine died. The only US nuclear submarines that have been lost ever are the Thresher and the Scorpion, and neither of those seems to have involved a collision with anything else.Yeah, but given the forces involved, I think any notable impact would cause a leak, and any leak would mean everyone is dead.
There have been cases where submarines have collided with things and people have generally survived.
While this is off topic, and I don't mean to sound like a know-it-all, the San Fran was not very structurally sound. She lost her ability to blow her forward MBT's, her ability to use any systems requiring air until she recharged her aft air banks, and her barrier to sea pressure was a very flimsy door leading to the sonar dome access tunnel. Furthermore, after the collision she was slowed to 2 knots, and IMHO if she had been any deeper than the 525 ft she was at she would have been lost. 688 class submarines surface by driving the boat to the surface using a combination of planes and speed. At 525 feet only a percentage of the water in the ballast tanks can be blown out due to sea pressure, and it is my humble opinion that if she had even been only 100 feet deeper she would not have been able to achieve positive bouyancy and surface (because of her lack of speed and the fact that only the aft MBT's could be blown). I have no scientific basis or evidence for any of my conclussions, but i do work on these systems every day and know then fairly well.The most recent directly relevant example is the USS San Francisco which hit a seamount head-on at 33 knots (38 mph) in 2005. As seen in Star Trek, the main thing that happens is that anything not tied down goes flying forward in the cabin at high speed and people get thrown out of their chairs pretty violently. Sailors were injured, some badly, and one died, but nobody drowned and the sub was, by and large, structurally fine. Needs hull repairs up front, of course, but she'll sail again.I don't think there has been any accident involving a US Navy submarine in your lifetime where everyone on the submarine died. The only US nuclear submarines that have been lost ever are the Thresher and the Scorpion, and neither of those seems to have involved a collision with anything else.Yeah, but given the forces involved, I think any notable impact would cause a leak, and any leak would mean everyone is dead.
There have been cases where submarines have collided with things and people have generally survived.
There are some watertight doors in the typical submarine. (Indeed, some apparently believe that the Scorpion was lost when watertight doors were closed during battery charging; the procedures that had been developed for charging batteries in WWII just so happened to not have to worry much about ventilating the batteries, because you typically were providing ventilation for the diesel engines at the same time, since on a WWII sub the only way to charge the batteries was to run the diesel. On a nuclear sub, closing the watertight doors while submerged and charging the batteries apparently will allow dangerous hydrogen buildups.)What I know is more about submersibles than submarines. I also know something about water pressure because I used to saturation dive. I was just figuring that if the impact even slightly compromises the integrity of the hull, the sub will be 1/5th its original size very quickly.
I was applying the concept that you can smash an egg from one front, but you can't crush it with equal pressure to all sides. But you can, obviously, if the shell is cracked.There are some watertight doors in the typical submarine. (Indeed, some apparently believe that the Scorpion was lost when watertight doors were closed during battery charging; the procedures that had been developed for charging batteries in WWII just so happened to not have to worry much about ventilating the batteries, because you typically were providing ventilation for the diesel engines at the same time, since on a WWII sub the only way to charge the batteries was to run the diesel. On a nuclear sub, closing the watertight doors while submerged and charging the batteries apparently will allow dangerous hydrogen buildups.)What I know is more about submersibles than submarines. I also know something about water pressure because I used to saturation dive. I was just figuring that if the impact even slightly compromises the integrity of the hull, the sub will be 1/5th its original size very quickly.
The sea pressure also keeps increasing as you go deeper. I suspect this means that if you are not near the maximum depth the hull can withstand, that margin can be applied as a reserve for surviving collisions below a certain speed.
Ok, I'll add that I always take Amtrak in the Northeast corridor for business - my book signings, science fiction conventions, academic conferences - to get to Boston, Phila, Baltimore, and Washington (I'm in NYC). I do this for convenience and pleasure.How exactly did we get from "What type of People Ride Amtrak?" to "Sub Collisions?" and how exactly can we get back to the topic? :blink:
Short people, tall people, adults, kids, people of all stripes ride Amtrak and their reasons for riding? Well, I like to ask them...and I find as many different reasons as people!
Joshua Lott is the photographer.A photographer with Reuters put these 50 pix out there:
http://www.reuters.com/news/pictures/slide...yName=News#a=50
These look like a fair sampling of who rides Amtrak and the faces look a lot happier than most you see on an airplane. If the link evaporates it was titled, "Riding the Rails" with Joshua somebody or other the photographer.
Sounds like a good reason to me, heck, except for the plans part I am riding with friends on my next birthday.Add another answer to the "what type of people ride Amtrak" question: an indecisive person who didn't get around to making any actual birthday plans
And then made his 500th post to the AU forum! :lol:
I hope you mean Us, we are celebritiesEven celebrities ride Amtrak.
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