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Less so now that they've done away with the derby system and assign individual ships catch quotas. De-incentivizes crews from working through conditions like that, and lets them either hunker down or move away from storms since they can come back later without risking their catch.
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Nov 4, 2021 06:26
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The Navy has been outdoing itself this past while. https://internewscast.com/business/navy-faces-prospect-that-sub-crash-will-force-uss-connecticut-out-of-service/
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Nov 4, 2021 06:48
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I remember my dad telling me about the time he was working at the steel works and some guy came in with fancy cowbow boots, which they tucked their pants into, to you know show off the boots. Anyway bit of melted steel accidentally flowed into them, and well apparently they couldn't save his foot. (Glasgow in the 60s possibly they'd have more luck today.) After that rule went out about never tucking your pants into boots. The moral of the story of course being don't work in a place where you have a chance of getting splashed with molten metal if you can at all avoid it. I mean except for maybe volcanologists.
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Nov 4, 2021 06:50
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nah your rule still applies, they dont work with molten metal.
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Nov 4, 2021 06:52
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Metal is highly conductive, meaning it will gently caress you up worse than anything except maybe live steam.
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Nov 4, 2021 07:01
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PhazonLink posted:I think this posts and my post on the next page explained why there's no fire Now I'm wondering if it'd be more or less dangerous with a single large ice cube the size of the fryer basket.
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Nov 4, 2021 07:25
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Mister Speaker posted:Now I'm wondering if it'd be more or less dangerous with a single large ice cube the size of the fryer basket. I'd imagine a bunch of smaller cubes are worse due to surface area. More surface area means faster ice->steam conversion.
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Nov 4, 2021 10:27
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https://i.imgur.com/rizgXHq.mp4
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Nov 4, 2021 10:41
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But is the food any good?
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Nov 4, 2021 10:44
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Azhais posted:But is the food any good? Despite all the rage, there's still just rats in the sage.
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Nov 4, 2021 10:50
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live action Ratatouille looking good
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Nov 4, 2021 10:51
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Looks like they need to make the hole bigger.
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Nov 4, 2021 11:06
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The rat fire brigade returning from another successful mission.
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Nov 4, 2021 11:46
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nomad2020 posted:The Navy has been outdoing itself this past while. That's the USS SAN FRANSISCO, who ran into a seamount going close to, if not at, flank speed several years ago. A guy working in the engine room died because he was coming out of a bilge he had been cleaning. The sub stopped so fast that the deck plate, which had been sitting on the deck, flew forward and gave him some kind of massive head wound, which killed him. There's another picture of this boat I can find that will show just how close they came to losing the whole boat. edit for pic: The SONAR Sphere is the crushed ball looking thing up front. It is "hollow" and the older boats had some electronic equipment in there. It's about a 30 foot tube that you have to get on your belly (or back) and crawl down to get to it. The access for that tunnel is a watertight hatch that you enter and exit through the wall in someone's rack. Usually a SONAR Tech has that rack because it sucks to have to wake someone up to crawl down the birthing tube and it might as well suck for the people who own the space. Anyway that is where the mooring lines are kept. Which I circled here  Never mind the process of the most junior guy having to crawl down, backwards holding part of the line, then crawling up and getting the next part, the whole time there is less and less space for you because the mooring lines are now in the tunnel with you. Anyway I have seen where a lazy SONAR tech hasn't closed that hatch all the way because "I just have to get back in there later." For all of the engineering and structural integrity that saved the boat, everyone would have died if STS3 Baggadonuts decided to be a shitbag that day. Deus Ex Macklemore fucked around with this message at 13:40 on Nov 4, 2021 |
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Nov 4, 2021 13:28
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Flyinglemur posted:That's the USS SAN FRANSISCO, who ran into a seamount going close to, if not at, flank speed several years ago. The mind boggles at how this transpired. Does the sonar not pick up the giant undersea mountain? Did the US Navy outsource their sub autopilot to Tesla?
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Nov 4, 2021 13:59
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Z the IVth posted:The mind boggles at how this transpired. Does the sonar not pick up the giant undersea mountain? Did the US Navy outsource their sub autopilot to Tesla? Ships and subs aren't running active sonar 24/7. First and foremost, going active immediately tells every nearby ship or sonobuoy exactly where you are. Second, going active is irritating to the crew, because they can hear it, too. Third, it's bad for the native wildlife (although the navy doesn't care as much about this one). Passive sonar will tell you a lot, but it doesn't tell you everything. The bottom of the ocean is constantly changing in ways we don't quite appreciate on land. It's a dangerous place, and submariners are nuts.
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Nov 4, 2021 14:04
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While we're Navy OSHA adjacent let me tell you about one of the other days I should have probably died. My first ship was an LST, a Long Slow Target if you will. It's job was to beach itself, drop a ramp and let a bunch of Marines run out and catch some bullets. The design was such that up to 5 LSTs could link up from bow ramp to stern gate in some kind of terrible Skimmer Centipede to release even more Marines at once, but I kinda think that it never really happened in real life because lol. These ships had two .50 cal mounts all the way up front under the derrick arms, where the arrow is pointing.  (please ignore the strip of paper seen at the bottom. Back in my day, you sent developed pictures home with descriptions on the back. My mom made a copy of the backs of my pictures and put them on the front before putting them in an album because she's a good mom) The top of the derrick arm is about 60 feet off the water, give or take. These ships also featured a flat bottom design and a very shallow draft, you know, to ground itself on purpose for ThE mIsSiOn. In high seas, or just sometimes calmish seas with strong swells under the surface, it wasn't out of the ordinary to take 30 degree rolls for a few hours at a time. This alone is enough content for this thread if you think about that kind of hell. When this happened it was also common for the bow to lift up and slam back down, making "bow shots". This was 30 years ago so I didn't have a phone to take a bunch of pics but I got these two, which are representative of a "normal" bow shot.   Well there we were, deployed off the coast of Somalia someplace. I was in the Weapons department and the .50 cals were up on their mounts. We were taking bowshots and the Division Officer decided we needed to pull the guns off because of the saltwater. He somehow got permission so 5 of us (him included, to his credit I suppose) to go up and get them off. Each gun takes two people to mount correctly because they are a bit unwieldy. We weren't tied off but we did have life jackets on. Every time we were about to take a bow shot the Ensign would yell "HANG ON" and at that point one of my arms had whatever I was doing in it and the other was wrapped around the wire rope that was the "safety rail" up there. It was slippery as gently caress and there was saltwater in my eyes and all in all just a terrible idea. For good measure, we packed the guns with grease so that the sea salt didn't do AS MUCH damage to them, so they were also slippery. We got done with the evolution and made it back to the superstructure when the Divo cheerily says, "well THAT was fun!" Can't believe the senior guy didn't punch him. None of the rest of us would have seen anything.
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Nov 4, 2021 14:06
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E; f,b.
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Nov 4, 2021 14:08
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Z the IVth posted:The mind boggles at how this transpired. Does the sonar not pick up the giant undersea mountain? Did the US Navy outsource their sub autopilot to Tesla? Like Mr. Nice! said, active sonar is super rare. So imagine you're driving in a car with the windows blacked out in a giant parking lot. You have a detailed map of the parking lot so you know where everything is and can navigate around that way. Then some rear end in a top hat builds a Smoothie King in the middle of the parking lot but doesn't tell anyone about it. That's how this happened. Unless someone DID update the map but the guy in charge of updating it forgot to do so. Then he gets fired, which if my memory is correct, is exactly what happened. Or at least, he got blamed for it. Passive SONAR is used to listen to things and sadly, mountains don't make a whole lot of noise. Usually.
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Nov 4, 2021 14:09
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Z the IVth posted:The mind boggles at how this transpired. Does the sonar not pick up the giant undersea mountain? Did the US Navy outsource their sub autopilot to Tesla? I am acquainted with someone involved with the incident after the fact. Word is that officers were doing some stupid poo poo and the Navy quietly covered it up. I don't have details, though.
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Nov 4, 2021 15:03
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Flyinglemur posted:Like Mr. Nice! said, active sonar is super rare. So imagine you're driving in a car with the windows blacked out in a giant parking lot. You have a detailed map of the parking lot so you know where everything is and can navigate around that way. Then some rear end in a top hat builds a Smoothie King in the middle of the parking lot but doesn't tell anyone about it. That's how this happened. If the mountain is making noise you have a different kind of problem.
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Nov 4, 2021 15:03
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Blue Footed Booby posted:If the mountain is making noise you have a different kind of problem. KNEW THIS WAS ONE WAY TICKET BUT YOU KNOW I HAD TO COME
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Nov 4, 2021 15:05
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When quitting via text message just isn't impactful enough...
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Nov 4, 2021 15:20
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Harry_Potato posted:When quitting via text message just isn't impactful enough... Guy probably went and enlisted in the Navy.
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Nov 4, 2021 15:28
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Random Stranger posted:I am acquainted with someone involved with the incident after the fact. Word is that officers were doing some stupid poo poo and the Navy quietly covered it up. I don't have details, though. The best stories always start with "hold my beer".
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Nov 4, 2021 15:29
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Flyinglemur posted:Like Mr. Nice! said, active sonar is super rare. So imagine you're driving in a car with the windows blacked out in a giant parking lot. You have a detailed map of the parking lot so you know where everything is and can navigate around that way. Then some rear end in a top hat builds a Smoothie King in the middle of the parking lot but doesn't tell anyone about it. That's how this happened. The article says it was going at flank speed when it hit the mountain though. To use your carpark analogy it would be flooring it through a crowded carpark with no vision, a map and totalling the car instead of having a fender bender when you hit the Smoothie King. Re: sonar - so modern subs navigate entirely by maps these days? Just using a map when you're cruising the open sea is fine but bumbling around on the seabed blind sounds unwise.
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Nov 4, 2021 16:08
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Z the IVth posted:Re: sonar - so modern subs navigate entirely by maps these days? Just using a map when you're cruising the open sea is fine Not sure if it's fine, I think you might not be able to Avoid Huge Ships that way. Going beneath the surface you will at least avoid them. Hitting another submarine is something that has happened before, though.
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Nov 4, 2021 16:17
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I feel like in most of the ocean there's a significant vertical gap between the bottoms of huge ships and the tops of underwater mountains so why don't the subs just stay there
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Nov 4, 2021 16:24
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Z the IVth posted:The article says it was going at flank speed when it hit the mountain though. To use your carpark analogy it would be flooring it through a crowded carpark with no vision, a map and totalling the car instead of having a fender bender when you hit the Smoothie King. Yes it was going flank speed through a part of the parking lot that was previously marked as clear. If the charts are up to date and all the navigation equipment is working, and I'm sorry if I didn't make it clear that they don't use regular maps they use more advanced equipment and techniques that I don't want to get into here for a couple of reasons, then it should be fine. Submarines go flying around the ocean at flank speed and don't hit anything everyday. There are sometimes when you have to floor it through the parking lot, and sometimes when you have to go slower and listen to what might be around you. Not every minute of every submarine underway is hunt for Red October. As for the Connecticut, the public statement is that it also bumped into an uncharted under sea obstacle like a mountain. The fact that no one has been publicly fired yet kind of backs that up. I'm also very familiar with people who have been involved in collisions as a submariner and I can tell you that the first thing the investigators look for is who the lowest person on the chain of command is that they can blame. Don't get me wrong, the captain gets his special attention as well and it must suck to be fired from a job because some jack hole is doing something wrong while you're in the rack sleeping. To get this back to some more OSHA related content, I was on the second crew of the Seawolf. I wasn't on the commissioning crew, I was on the crew that took her out for sea trials. I've got a couple of stories that I'm not sure if I can share, but the one I certainly can share has to do with blowing the poo poo tanks. It's pretty common on ships in submarines that someone messes up a valve line up and when you apply pressurized air to the poo poo tank it blows somewhere inside instead of out to the holding tank through the hose. This happened more than once on Seawolf because one of the drawings was missing a valve. That valve was in the head on the top deck. So when it would blow pressurized poo poo into the bathroom, it would all run down into the decks below it. I spent and Easter Monday with the rest of my duty section cleaning poo poo out of every crack and crevice. At one point I asked the Duty officer if we could get some OSHA approved equipment outside of the blue gloves I was wearing and I got pulled aside and got a counseling chit for it. I kind of think that military OSHA is cheating because holy gently caress.
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Nov 4, 2021 16:35
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There's a lot of conditions to contend with depending on what the sub is tasked with doing. You have what's called a thermal layer in the ocean that can help or hinder the transmission of sound, depending on your position relative to it. Deeper than the layer, and it will help mask any sounds you make from ships on the surface. Above the layer, and it could bounce sound between the layer and the surface, greatly increasing the range at which it can be heard, same is true for traveling within the layer. If you're trying to stay stealthy, you want to stay under that layer. In fact, the faster you want to travel, the deeper you want to be to control sound (not 100% of the time depending on conditions, but this is a general rule of thumb). At flank speed, you may start cavitating at shallower depths, which is loud underwater. What I'm saying is that it's not that simple, they could have just as easily drifted into something after stopping or trying to stop, could have been off on their positioning, any number of things that make it just a thing that happens in submarining. This absolutely isn't the first time and won't be the last time a submarine collides with terrain at speed.
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Nov 4, 2021 16:43
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Z the IVth posted:Re: sonar - so modern subs navigate entirely by maps these days? Just using a map when you're cruising the open sea is fine but bumbling around on the seabed blind sounds unwise. Well, everybody always navigates entirely by maps. Whether it's a paper chart or an electronic database or your own mental model, you've got to have some understanding of where you are and where you are trying to go in order to get there.  I think you are talking about navigating by dead reckoning, though, where the navigator just looks at a map and compares it to the ship's heading and speed and estimates where they are. That is a major part of undersea navigation but not the whole story. Military submarines have instruments that can passively detect changes in the earth's gravitational field caused by undersea mass concentrations, and comparing those readings to a chart of the known concentrations helps create an unambiguous position fix.
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Nov 4, 2021 16:53
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Wheeeee! https://i.imgur.com/2UPGeb5.mp4
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Nov 4, 2021 16:55
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fuckin love backpack blowers the sheer volume of woody debris you can clear out of a backyard with just two backpack blowers, and then maybe one guy with a rake lightly teasing poo poo up...its pretty satisfying also on a really hot day you just angle it at your ankle and it will get all the sweat off your legs and balls
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Nov 4, 2021 17:01
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20 Blunts posted:also on a really hot day you just angle it at your ankle and it will get all the sweat off your legs and balls
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Nov 4, 2021 17:06
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Z the IVth posted:The article says it was going at flank speed when it hit the mountain though. To use your carpark analogy it would be flooring it through a crowded carpark with no vision, a map and totalling the car instead of having a fender bender when you hit the Smoothie King. Destin from Smarter Every Day did a series on submarines recently, and he did a video about sonar. https://www.youtube.com/watch?v=AqqaYs7LjlM
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Nov 4, 2021 17:22
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Flyinglemur posted:the poo poo tank So many of mankind's amazing technological achievements are complicated by poop.
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Nov 4, 2021 17:37
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Cojawfee posted:Destin from Smarter Every Day did a series on submarines recently, and he did a video about sonar. This whole series he did is fantastic. He does a great job of explaining how torpedo tubes and O2 generation work. Its rare to find a decent, watchable sub documentary series and this is definitely the best I've seen in a while. Even with the Nuke Senior Chief who is desperately trying to make it into the Command Master Chief pipeline.
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Nov 4, 2021 17:39
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I think subs use INS for navigation too don't they? I would guess you're [supposed to be] looking at a lot of different navigation aids and making sure they all agree Which doesn't help of course if you're exactly where you think you are, and so is the undersea mountain EvenWorseOpinions fucked around with this message at 17:52 on Nov 4, 2021 |
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Nov 4, 2021 17:50
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Nov 4, 2021 18:02
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Flyinglemur posted:... There are sometimes when you have to floor it through the parking lot... No, incorrect. You should never "floor it" in a parking lot, what the gently caress
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Nov 4, 2021 18:09
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