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International tug at bottom of ocean |
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DaveKamp
Orange Level Access Joined: 12 Apr 2010 Location: LeClaire, Ia Points: 5637 |
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Posted: 18 Feb 2019 at 7:47am |
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Dmiller is spot on... it's not doing much work, it'd just be making lots of noise... But also... the steamship's system was a CLOSED LOOP... steam went through the quad-expansion engines, THEN through the turbine, then through ships's dynamos, refrigeration system, cabin heating, and other functions, and condensed as it cooled... finally returning to the boiler feed nurse tank. This did several things- first, it made absolute greatest use of all fuel energy, next, it provided universal power source for everything... and finally, eliminated the problem of desalination, and RAISING THE TEMPERATURE of feed-water. If they desalinated and boiled seawater, it'd have to start at about 28F, and be raised to 350F to be ready for propulsion. Condensing and recovering water meant that it was returning to the water feed tank at about 100F... and it was CLEAN (no salt). Them guys a hundred'n something years ago... they were smart. Mebbie not good at dodging an iceberg, but if they had radar like we do now, it'd be a different story. If they had genuine steel and arc welding technology (like what was used in the Hornet), it would've bounced off, with a really bad dent down the belly, and been in New York by the afternoon.
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DMiller
Orange Level Access Joined: 14 Sep 2009 Location: Hermann, Mo Points: 29500 |
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Venting steam wastes water and energy, the bunker fire had it been happening would not have been helped much as just making lots of free steam does not make use of lots of coal, has to be used and work loaded for the condensers to recover to make more steam. Feed and reheat.
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Walker
Orange Level Access Joined: 12 Sep 2009 Location: oh Points: 8083 |
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Good question, it didn't get into that.
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CrestonM
Orange Level Joined: 08 Sep 2014 Location: Oklahoma Points: 8357 |
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I've heard that theory, and I'll admit I don't know a lot about steamships, but I've often wondered even if they were burning so much coal, couldn't they still keep the reciprocating engines slowed down and just vent excess steam?
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Walker
Orange Level Access Joined: 12 Sep 2009 Location: oh Points: 8083 |
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Titanic is said to have been traveling so fast when it hit was because they were trying to empty that bunker but by then the fire had moved into a second bunker and the heat had compromised integrity of the hull.
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DMiller
Orange Level Access Joined: 14 Sep 2009 Location: Hermann, Mo Points: 29500 |
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Update from an OLDER Guy that served on old Carriers, the tires were filled with ballast, Cement for point in fact so were a No Flat tire as well. And yes the little tug would have been Battle Secured in its storage location.
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DaveKamp
Orange Level Access Joined: 12 Apr 2010 Location: LeClaire, Ia Points: 5637 |
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I wouldn't be least bit surprised if there was a coal bunker fire... it happened all the time... Towboats pushing barges up the river in front of my house would have fires every so often... but I doubt it had much contribution to the sinking. Suffice to say that an iceberg was essentially a filet knife to the ship's belly. CV-8 was beat up pretty bad by three Japanese bombs and two torpedos. The crew did an incredible job of damage control, kept it afloat, but disabled, it was put in tow behind the Northampton... but at only 5 knots, and no maneuverability, it put TWO ships at serious risk. Hornet took another torpedo hit, so the crew was pulled off, and they attempted to scuttle it with five inch rounds and torpedos... but it simply would NOT sink. As it was adrift and abandoned, two Japanese destroyers sent it down with four torpedos. Because of it still floating after all that damage, guys said the Hornet was a supernatural beast... and it was for that reason, that sailors were proud to see then name was revived with CV-12 (the Essex-class Kearsarge was renamed Hornet when it was finished in '43). It probably confused and then mortified Japanese naval intelligence a bit to find that a ship they'd just reported sunk, was bearing down on the Caroline Islands only a year-and-something later... but with a totally new look, bristling with weapons and technology they'd never seen. I'm certain that tug was 'tied down'. Standard procedure for mobile equipment on ship to be secured when not in use.
Edited by DaveKamp - 17 Feb 2019 at 10:37am |
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Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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nella(Pa)
Orange Level Access Joined: 11 Sep 2009 Location: Allentown, Pa. Points: 3081 |
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X 2 The rear tire at the bead isn't centered on the rim if it is still on the rim, I don't think that it is the camera angle making it look that way. The front tire looks ok. There is something half round at the front between the front wheels sticking out whatever that is.
Edited by nella(Pa) - 17 Feb 2019 at 5:43am |
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Thad in AR.
Orange Level Access Joined: 12 Sep 2009 Location: Arkansas Points: 9273 |
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Since this post started I’ve been doing a little research. I found a video that talks about the rescue and sinking. They had it all but saved and moving again when round 2 hit. If I understand correctly after the last man was safely on the rescue boat we actually sunk it our selves. As I understand it it was severely damaged and immobile. Not much mention of the planes cept that some landed on the Enterprise and others crashed in the ocean.
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Walker
Orange Level Access Joined: 12 Sep 2009 Location: oh Points: 8083 |
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JohnCO
Orange Level Joined: 11 Sep 2009 Location: Niwot Colo Points: 8992 |
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In the link nella posted on page 1, you can see a cable looped around the drawbar and something on the ship. There might also be something holding the tractor in the front too.
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"If at first you don't succeed, get a bigger hammer"
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CrestonM
Orange Level Joined: 08 Sep 2014 Location: Oklahoma Points: 8357 |
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That's really neat to learn! Never know what you'll find out on the Allis-Chalmers Forum!
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DaveKamp
Orange Level Access Joined: 12 Apr 2010 Location: LeClaire, Ia Points: 5637 |
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This is a very, very important factor... they're two entirely different materials. Britan's iron industry in the late 1800's was huge in comparison to the US... around 7 million tons of IRON produced in the mid 1870's, and reaching 10 million tons around the time the Titanic's keel was laid (1909). This production was split- half was iron, the other was early alloys (steels). Although the ship's design technology was formidable for it's time (1909), the metal, and method was absolutely outclassed in every way by later technology used in US warships. the Titanic's plates are more iron than 'modern' steel. In stark contrast, the CV-8 Hornet's Yorktown-class 1939 hull is STEEL, produced using much better raw materials, process control, alloy chemistry, and quality control. The US's steel industry went from 2 million tons in the early 1870's to 26 million by the time Titanic was built... and a huge jump up by the time the Yorktown-class carriers were built. A large majority of the US's ferrous production output was true steel, from the furnaces in Allentown/Bethlehem, Pittsburgh, Birmingham Alabama, Gary, Indiana, Milwaukee, and elsewhere. The reason why this matters so much... is because the Titanic rests in a spot in the north atlantic where a combination of water temperatures, minerals and gases ejected from rifting have made wonderful home for a type of bacteria that voraciously consumes iron. The Hornet's aquatic environment is much different with respect to bacteria and algae. |
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Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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TimNearFortWorth
Orange Level Joined: 12 Dec 2009 Points: 2014 |
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Used to run subsea wellhead systems from semi-submersibles and drill ships where the surface casing was 1 - 1-1/2" wall thickness. With cement shoe attached to the bottom 40' joint (think one-way check valve) we had to make sure each 30" OD joint was filled at the rig floor when made up which equalized the casing string at the water line while lowering (about 100' below rig floor).
Only ever seen two strings that had to be recovered due to someone forgetting to fill internally while running to the sea floor. Do not remember at what water depth the engineers later figured up the one failed at but made a helluva mess, flattened that heavy wall casing like a paper towel tube. We got one string back but on the other the snaplock connector parted between casing joints and we dropped the casing. Took an ROV to find it, latch us on with drill pipe/giant cables so we could get it back up under the rig to the moonpool and cut it apart with torches. We wanted to leave it on the sea floor (2000') but Korean govt. wanted it recovered due to US subs patrolling that area, took us nearly a week. |
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Walker
Orange Level Access Joined: 12 Sep 2009 Location: oh Points: 8083 |
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I know when they brought up Queen Ann's Revenge cannons from 300 years in shallow water off the Outer Banks they spent months and years preparing and stabilizing them for display. Took months just to remove the barnacles.
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Mikez
Orange Level Access Joined: 16 Jan 2013 Location: Usa Points: 8148 |
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That is neat video
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AllisFreak MN
Orange Level Access Joined: 07 Dec 2009 Location: Minnesota Points: 1500 |
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I'm wondering if the salt actually gets into the metal and causes a change in the metallurgy or something else. Any chemist's here?
[/QUOTE]I don't know but maybe that would explain my old Chevy pickup. |
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'49 A-C WD, '51 A-C WD, '63 A-C D17 Series III, 1968 A-C One-Seventy, '82 A-C 6060, '75 A-C 7040, A-C #3 sickle mower, 2 A-C 701 wagons, '78 Gleaner M2
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JohnCO
Orange Level Joined: 11 Sep 2009 Location: Niwot Colo Points: 8992 |
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To kind of hijack the post, I was talking to a guy that works for a company that builds mines for mining companies. They dig the holes down to the material, set up the lift tower, build buildings etc. Anyway he told me that once a piece of machinery goes into a salt mine, it never comes back. One reason is because they have to be dismantled to get them down and they are worn out when they retire them but the other reason is that the machine would rust apart in a short time if it's back on top. I'm wondering if the salt actually gets into the metal and causes a change in the metallurgy or something else. Any chemist's here?
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"If at first you don't succeed, get a bigger hammer"
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chaskaduo
Orange Level Joined: 26 Nov 2016 Location: Twin Cities Points: 5203 |
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Yeah he definitely has the polymuric valance viscosity of the water ohm down.
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1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
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shameless dude
Orange Level Joined: 10 Apr 2017 Location: east NE Points: 13611 |
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or made of solid rubber? I don't thinks Dave went to the same type country schools as the rest of us!
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chaskaduo
Orange Level Joined: 26 Nov 2016 Location: Twin Cities Points: 5203 |
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Maybe the tires were ballasted to help keep em on a rocking deck (lower center of gravity) or for traction pulling loads on a smooth well swabbed deck?
Edited by chaskaduo - 16 Feb 2019 at 12:32pm |
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1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
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LouSWPA
Orange Level Access Joined: 11 Sep 2009 Location: Clinton, Pa Points: 24021 |
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I think the tug is sitting in the hanger deck, I doubt that it was tied down, but I'm not an expert. what amazes me is the tires, one would think they would be deflated. Hard to tell, but that doesn't look to be the case
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Ray54
Orange Level Access Joined: 22 Nov 2009 Location: Paso Robles, Ca Points: 4346 |
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As commented this is the story that is everywhere. It was reported else where that it rests at 17,500 feet. So less oxygen less rust, but even greater pressure.
Edited by Ray54 - 16 Feb 2019 at 1:37pm |
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TramwayGuy
Orange Level Access Joined: 19 Jan 2010 Location: Northern NY Points: 11204 |
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Temperature is a big factor in deterioration. The colder it is, the slower the process is.
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chaskaduo
Orange Level Joined: 26 Nov 2016 Location: Twin Cities Points: 5203 |
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Probably different alloying of the steel and paint for corrosion resistance.
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1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
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CrestonM
Orange Level Joined: 08 Sep 2014 Location: Oklahoma Points: 8357 |
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Really incredible find! The name tag on the tug must be aluminum, or else it wouldn't be readable. Like others have said, I can't believe how nice it looks!
After reading Dave's reply, this came to mind...the Titanic and the Hornet have both been underwater for quite some time, yet the Titanic is supposedly getting dissolved fairly quickly by anaerobic bacteria that feed on the iron. Yet the Hornet (and the tug on her deck) are in excellent shape. Granted, the Titanic went down 30 years earlier, but still, the difference in the condition of the two ships is huge. Guess it just depends on which part of the ocean you're in? |
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nella(Pa)
Orange Level Access Joined: 11 Sep 2009 Location: Allentown, Pa. Points: 3081 |
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nella(Pa)
Orange Level Access Joined: 11 Sep 2009 Location: Allentown, Pa. Points: 3081 |
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[TUBE]IrmJn6Oudos[/TUBE]
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DaveKamp
Orange Level Access Joined: 12 Apr 2010 Location: LeClaire, Ia Points: 5637 |
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At 6000ft, the ambient pressure will be 182.5 atmospheres... 2680psi. IF the radiator was filled with gas, it would have been crushed... but several things in play here... first being, that it, and the block, was mostly full of liquid coolant... second, is that the system is inherently vented above a certain differential pressure. the cap on that tractor was probably good for not much more than 6psi or so, and the cap seal is certainly incapable of much more than that in any direction. Second, is that if there was any pressure crushing the upper or lower tanks, it would breach the solder joints in where the tubes meet the tanks FIRST. Any of those circumstances would allow immediate inflow of seawater, and thus, compress any entrapped gasses, and allow any NOT trapped to escape. This means the pressure INSIDE, is equalized with OUTSIDE, which means there's NO additional deflection imposed on any part of it. Same would be true for the gas tank, as it was vented via the cap. Many of you may have already seen the news...but for those who haven't... marine surveyors operating deep-see exploration equipment were doing forensic examination of the wreckage of the Titanic, to learn more about the techniques of shipbuilding and engineering. The engineers were amazed that even though the boilers were down 12,500ft for over a hundred years, there was still water in them!!! |
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Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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Walker
Orange Level Access Joined: 12 Sep 2009 Location: oh Points: 8083 |
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Edited by Walker - 15 Feb 2019 at 10:18pm |
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