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Seven years of metalworking. I am humbled
On 08/24/2016 7:07 PM, Ed Huntress wrote:
On Wed, 24 Aug 2016 16:56:25 -0500, wrote: On 08/24/2016 2:44 PM, Ed Huntress wrote: ... Wouldn't you like to see the stability calculations for that tub? d8-) The results for four cases are in the report linked to...two for the actual loading of ballast and the two for the reported 23 LT given the naval architect initially. Aha! Not having much spare time at the moment, can you give me an answer to where the screw-up was? Twofold -- one, the misreporting of the bias in load cell readings port/starboard as the same in the data provided the naval architect combined with the fact they didn't correct the (documented before the calculations) assumption that they had, indeed, already loaded some 27 LT of ballast instead of the ~17 LT actual. The latter (I think obviously?) greatly enhanced the problem caused by the former; when analyzed with the given data, was within Coast Guard guideline limits sufficiently to not scrub the launch. A second analysis with the actual side-to-side imbalance but the 27 LT was still marginally stable; the architect said he would have noted extreme caution would be needed but probably not have stopped the launch. The actual case as analyzed was a show-stopper from the git-go... The screw-ups all seem to go back to the shipyard; they recorded the load cell readings correctly even to having written them on the hull but somehow transcribed them incorrectly when providing them to the architect. I didn't read carefully enough to follow the entire chain of events on the 27 LT vs 17 LT ballast, but during preliminary completion measurements, the architect revised up the total tonnage and required ballast at least 2 or 3 times, leaving the last recommendation at the 27 LT number. It was not reported to him they didn't load that much so he used it in the stability calculation prior to launch. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
Seven years of metalworking. I am humbled
On Wed, 24 Aug 2016 20:00:11 -0500, dpb wrote:
On 08/24/2016 7:07 PM, Ed Huntress wrote: On Wed, 24 Aug 2016 16:56:25 -0500, wrote: On 08/24/2016 2:44 PM, Ed Huntress wrote: ... Wouldn't you like to see the stability calculations for that tub? d8-) The results for four cases are in the report linked to...two for the actual loading of ballast and the two for the reported 23 LT given the naval architect initially. Aha! Not having much spare time at the moment, can you give me an answer to where the screw-up was? Twofold -- one, the misreporting of the bias in load cell readings port/starboard as the same in the data provided the naval architect combined with the fact they didn't correct the (documented before the calculations) assumption that they had, indeed, already loaded some 27 LT of ballast instead of the ~17 LT actual. The latter (I think obviously?) greatly enhanced the problem caused by the former; when analyzed with the given data, was within Coast Guard guideline limits sufficiently to not scrub the launch. A second analysis with the actual side-to-side imbalance but the 27 LT was still marginally stable; the architect said he would have noted extreme caution would be needed but probably not have stopped the launch. The actual case as analyzed was a show-stopper from the git-go... The screw-ups all seem to go back to the shipyard; they recorded the load cell readings correctly even to having written them on the hull but somehow transcribed them incorrectly when providing them to the architect. I didn't read carefully enough to follow the entire chain of events on the 27 LT vs 17 LT ballast, but during preliminary completion measurements, the architect revised up the total tonnage and required ballast at least 2 or 3 times, leaving the last recommendation at the 27 LT number. It was not reported to him they didn't load that much so he used it in the stability calculation prior to launch. Thanks! I appreciate the time you took to explain it. To me, it's a relief to hear it was a mistake by the yard, rather than by the architect. It's still an ugly tub, though. g -- Ed Huntress |
Seven years of metalworking. I am humbled
On Wed, 24 Aug 2016 15:44:08 -0400, Ed Huntress
wrote: On Wed, 24 Aug 2016 19:36:14 +0000 (UTC), Cydrome Leader wrote: Joe Gwinn wrote: In article , Cydrome Leader wrote: Joe Gwinn wrote: In article , Ignoramus581 wrote: On 2016-08-21, Cydrome Leader wrote: Ignoramus31642 wrote: On 2016-08-19, Ignoramus25500 wrote: On 2016-08-18, Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote: Boris Mohar fired this volley in : https://youtu.be/KWe75FAM8AQ Hmmm... I see a LOT of work there, but nothing that would 'humble' even a dollar-wage mechanic. It's just a lot of work -- not a thing that could be considered especially innovative, or requiring special skills. The totality of it, all together, is what makes it humbling. However, I will moderate my praise until I see this boat sail and operate in real world conditions. https://www.youtube.com/watch?v=ayKOlLhlQsc https://www.youtube.com/watch?v=N6TYQZd0HPs https://www.youtube.com/watch?v=xdf5iHQnU1w https://www.youtube.com/watch?v=GLdXEwhsDiM and this too http://www.ntsb.gov/investigations/A...ts/MAB1514.pdf Was it expected to not sink? It's real ugly too, so no loss either there. This is exactly my sentiment. I was happy to read that the boat maker went bankrupt due to this accident. The $10 million boat was a total loss. I bet the insurance company declined to pay, which is perfectly legal and expected, given the cause. Joe Gwinn How the hell was that piece of junk 10 million? It's not the hull, it's all the fancy stuff within, none of which survives being soaked in sea water. Even if you factor in the really bad taste, what would you even stuff in that top-heavy mess worth many millions of dollars? A whole bunch of chandeliers and rare paintings? A fleet of helicopters? If the shipyard hadn't become scatterbrained and had managed to get the ballasting right, the boat probably would have been exactly what the owner wanted. I'm still quite pleased that thing sank instantly. Wouldn't you like to see the stability calculations for that tub? d8-) There is a pretty detailed report, including righting moments at http://www.ntsb.gov/investigations/A...ts/MAB1514.pdf as mentioned above. -- cheers, John B. |
Seven years of metalworking. I am humbled
On 08/24/2016 8:08 PM, Ed Huntress wrote:
.... Thanks! I appreciate the time you took to explain it. To me, it's a relief to hear it was a mistake by the yard, rather than by the architect. The report makes the launch sequence sound about like "Bubba Goes to Sea", besides. Hard to comprehend how a sizable operation could have been so slack in so many ways. It's still an ugly tub, though.g Seems to fit the modern trend, though... -- --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
Seven years of metalworking. I am humbled
On 2016-08-25, dpb wrote:
The report makes the launch sequence sound about like "Bubba Goes to Sea", besides. Hard to comprehend how a sizable operation could have been so slack in so many ways. The big mistake was the weight imbalance. The launching procedure seems typical for small businesses around Chicago, this is how everyone does almost everything everywhere where I would go. **** happens occasionally due to various corners that people cut to save money. How else would they launch it? Rent a 500 ton crane? or a dry dock? Building a bigger dolly, maybe would have been prudent in light of what happened. They launched a huge boat on what looked like a semi trailer rear end. The "loud pop" was doubtless a tire popping from immense overload, which immediately made everything tilt even worse than before. i |
Seven years of metalworking. I am humbled
If you think that the yacht that capsized and discussed here was a
harebrained idea, how about this one: http://newatlas.com/hareide-design-super-yacht/44391/ I am hard pressed to think about anything as stupid as that boat, the stern dipping into water and the "garden". i |
Seven years of metalworking. I am humbled
On 08/25/2016 2:48 PM, Ignoramus19262 wrote:
On 2016-08-25, wrote: The report makes the launch sequence sound about like "Bubba Goes to Sea", besides. Hard to comprehend how a sizable operation could have been so slack in so many ways. The big mistake was the weight imbalance. They coulda' lived with that if they'd'a' loaded the other 10 LT of ballast they were short...been a little dicey, but that's what the analyses post-launch showed. The launching procedure seems typical for small businesses around Chicago, this is how everyone does almost everything everywhere where I would go. **** happens occasionally due to various corners that people cut to save money. Well, losing a $10M vessel didn't save 'em much, did it? And, this is Norfolk Naval Shipyard, granted, but it wasn't all that small an outfit, either...this particular project by the descriptions in the report seemed to have fallen into a whole bunch of dark gray, if not black, holes with multiple manager changes, etc., etc., etc., ... How else would they launch it? Rent a 500 ton crane? or a dry dock? You go on to answer a fair start of the question...it wouldn't have taken a lot. Building a bigger dolly, maybe would have been prudent in light of what happened. They launched a huge boat on what looked like a semi trailer rear end. The "loud pop" was doubtless a tire popping from immense overload, which immediately made everything tilt even worse than before. i --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
Seven years of metalworking. I am humbled
On Thu, 25 Aug 2016 18:52:53 -0500, Ignoramus19262
wrote: If you think that the yacht that capsized and discussed here was a harebrained idea, how about this one: http://newatlas.com/hareide-design-super-yacht/44391/ I am hard pressed to think about anything as stupid as that boat, the stern dipping into water and the "garden". Hey, Ig. Loan me a mil or two. Now that I'm retired, I'd love to rent one of those for a month. Anybody else in? g -- The great thing about getting older is that you don't lose all the other ages you've been. -- Madeleine L'Engle |
Seven years of metalworking. I am humbled
On Thu, 25 Aug 2016 18:52:53 -0500
Ignoramus19262 wrote: If you think that the yacht that capsized and discussed here was a harebrained idea, how about this one: http://newatlas.com/hareide-design-super-yacht/44391/ I am hard pressed to think about anything as stupid as that boat, the stern dipping into water and the "garden". i I thought this one was a whole lot more interesting to read: "Wrecked locomotive discovered after 106 years under Lake Superior" http://www.mlive.com/news/index.ssf/...e_superio.html -- Leon Fisk Grand Rapids MI/Zone 5b Remove no.spam for email |
Seven years of metalworking. I am humbled
On 2016-08-26, Larry Jaques wrote:
On Thu, 25 Aug 2016 18:52:53 -0500, Ignoramus19262 wrote: If you think that the yacht that capsized and discussed here was a harebrained idea, how about this one: http://newatlas.com/hareide-design-super-yacht/44391/ I am hard pressed to think about anything as stupid as that boat, the stern dipping into water and the "garden". Hey, Ig. Loan me a mil or two. Now that I'm retired, I'd love to rent one of those for a month. Anybody else in? g Just stay REALLY close to shore when you rent one, and call a rescue helicopter as soon as waves reach the height of 2 feet. |
Seven years of metalworking. I am humbled
"Leon Fisk" wrote in message
... On Thu, 25 Aug 2016 18:52:53 -0500 Ignoramus19262 wrote: If you think that the yacht that capsized and discussed here was a harebrained idea, how about this one: http://newatlas.com/hareide-design-super-yacht/44391/ I am hard pressed to think about anything as stupid as that boat, the stern dipping into water and the "garden". i I thought this one was a whole lot more interesting to read: "Wrecked locomotive discovered after 106 years under Lake Superior" http://www.mlive.com/news/index.ssf/...e_superio.html -- Leon Fisk There's a steam locomotive in the harbor of Portsmouth NH: http://www.someoldnews.com/?p=1296 The replacement Sarah Long drawbridge jammed a few days ago. It was already scheduled to be replaced after a ship hit and damaged it. This fallen engine was salvaged from the river and ran for many years: https://en.wikipedia.org/wiki/File:N...motive_224.jpg --jsw |
Seven years of metalworking. I am humbled
On Fri, 26 Aug 2016 07:58:47 -0500, Ignoramus12311
wrote: On 2016-08-26, Larry Jaques wrote: On Thu, 25 Aug 2016 18:52:53 -0500, Ignoramus19262 wrote: If you think that the yacht that capsized and discussed here was a harebrained idea, how about this one: http://newatlas.com/hareide-design-super-yacht/44391/ I am hard pressed to think about anything as stupid as that boat, the stern dipping into water and the "garden". Hey, Ig. Loan me a mil or two. Now that I'm retired, I'd love to rent one of those for a month. Anybody else in? g Just stay REALLY close to shore when you rent one, and call a rescue helicopter as soon as waves reach the height of 2 feet. I don't think it's nearly that low, but it's probably designed for calmer waters, to be sure. I hope the wading pool is sal****er. -- The great thing about getting older is that you don't lose all the other ages you've been. -- Madeleine L'Engle |
Seven years of metalworking. I am humbled
On Fri, 26 Aug 2016 09:54:12 -0400, "Jim Wilkins"
wrote: "Leon Fisk" wrote in message ... On Thu, 25 Aug 2016 18:52:53 -0500 Ignoramus19262 wrote: If you think that the yacht that capsized and discussed here was a harebrained idea, how about this one: http://newatlas.com/hareide-design-super-yacht/44391/ I am hard pressed to think about anything as stupid as that boat, the stern dipping into water and the "garden". i I thought this one was a whole lot more interesting to read: "Wrecked locomotive discovered after 106 years under Lake Superior" http://www.mlive.com/news/index.ssf/...e_superio.html I'd love to go exploring with a ROV. Faskinatin'. -- Leon Fisk There's a steam locomotive in the harbor of Portsmouth NH: http://www.someoldnews.com/?p=1296 Those two must have scared hell out of the crew before they claimed their lives. shudder The replacement Sarah Long drawbridge jammed a few days ago. It was already scheduled to be replaced after a ship hit and damaged it. This fallen engine was salvaged from the river and ran for many years: https://en.wikipedia.org/wiki/File:N...motive_224.jpg Did that boiler blow? The raised sheet metal cowling just forward of the center looks blown out. --jsw -- The great thing about getting older is that you don't lose all the other ages you've been. -- Madeleine L'Engle |
Seven years of metalworking. I am humbled
On 08/26/2016 7:16 AM, Leon Fisk wrote:
.... I thought this one was a whole lot more interesting to read: "Wrecked locomotive discovered after 106 years under Lake Superior" http://www.mlive.com/news/index.ssf/...e_superio.html Not so deep, but "local color" http://www.kshs.org/km/items/view/228294 The locomotive ended up in the bottom of the river, not visible in the picthers...legend at least has it that it sank in the quicksand. There are some pictures at the old depot showing the recovery efforts...flash flood had washed the bridge out. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
Seven years of metalworking. I am humbled
"Larry Jaques" wrote in message ... On Fri, 26 Aug 2016 09:54:12 -0400, "Jim Wilkins" wrote: ... This fallen engine was salvaged from the river and ran for many years: https://en.wikipedia.org/wiki/File:N...motive_224.jpg Did that boiler blow? The raised sheet metal cowling just forward of the center looks blown out. --jsw The loco fell within the enclosing bridge girder. The investigation never determined what went wrong because there were too many possible causes -- the entire "high girder" section of the bridge and its supporting columns collapsed, and the lesson was to stop building with cast iron instead of trying to improve it. Rolled structural steel was just becoming available. https://en.wikipedia.org/wiki/Tay_Bridge_disaster http://taybridgedisaster.co.uk/ https://en.wikipedia.org/wiki/Hammer_blow Painters working on the bridge reported that it shook considerably when a train passed over. The Tay Bridge is a poster child for excessive cost-cutting redesign, poor unsupervised fabrication and inept maintenance. --jsw |
Seven years of metalworking. I am humbled
On 2016-08-25, dpb wrote:
On 08/25/2016 2:48 PM, Ignoramus19262 wrote: On 2016-08-25, wrote: The report makes the launch sequence sound about like "Bubba Goes to Sea", besides. Hard to comprehend how a sizable operation could have been so slack in so many ways. The big mistake was the weight imbalance. They coulda' lived with that if they'd'a' loaded the other 10 LT of ballast they were short...been a little dicey, but that's what the analyses post-launch showed. If I recall, the analysis showed that it would indeed not overturn during launch, but it would not meet the stability requirements. The launching procedure seems typical for small businesses around Chicago, this is how everyone does almost everything everywhere where I would go. **** happens occasionally due to various corners that people cut to save money. Well, losing a $10M vessel didn't save 'em much, did it? No... But I guess the money was already taken out of the company... And, this is Norfolk Naval Shipyard, granted, but it wasn't all that small an outfit, either...this particular project by the descriptions in the report seemed to have fallen into a whole bunch of dark gray, if not black, holes with multiple manager changes, etc., etc., etc., ... Right. Some rich guy from Iowa was building a dream "expeditionary luxury boat" and I have a feeling that, in the middle of the building process, his health got worse or his priorities shifted, resulting in less attention paid and lower priority placed. i |
Seven years of metalworking. I am humbled
On 08/26/2016 5:38 PM, Ignoramus12311 wrote:
.... Some rich guy from Iowa was building a dream "expeditionary luxury boat" and I have a feeling that, in the middle of the building process, his health got worse or his priorities shifted, resulting in less attention paid and lower priority placed. Have no way to know "why", but the lack of QC and process by the contracting firm is mind-boggling for a $10M+ project. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
Seven years of metalworking. I am humbled
On 2016-08-27, dpb wrote:
On 08/26/2016 5:38 PM, Ignoramus12311 wrote: ... Some rich guy from Iowa was building a dream "expeditionary luxury boat" and I have a feeling that, in the middle of the building process, his health got worse or his priorities shifted, resulting in less attention paid and lower priority placed. Have no way to know "why", but the lack of QC and process by the contracting firm is mind-boggling for a $10M+ project. I agree. i |
Seven years of metalworking. I am humbled
On Sat, 27 Aug 2016 21:47:07 -0500, Ignoramus19573
wrote: On 2016-08-27, dpb wrote: On 08/26/2016 5:38 PM, Ignoramus12311 wrote: ... Some rich guy from Iowa was building a dream "expeditionary luxury boat" and I have a feeling that, in the middle of the building process, his health got worse or his priorities shifted, resulting in less attention paid and lower priority placed. Have no way to know "why", but the lack of QC and process by the contracting firm is mind-boggling for a $10M+ project. I agree. You'd think that at the very least, the last guy to head the project would have gone over everything with a fine toothed comb, just to cover his _own_ ass, let alone the company's. shrug Scary thought: Is this what's coming out of our colleges nowadays? -- The great thing about getting older is that you don't lose all the other ages you've been. -- Madeleine L'Engle |
Seven years of metalworking. I am humbled
"Larry Jaques" wrote in message ... On Sat, 27 Aug 2016 21:47:07 -0500, Ignoramus19573 wrote: On 2016-08-27, dpb wrote: On 08/26/2016 5:38 PM, Ignoramus12311 wrote: ... Some rich guy from Iowa was building a dream "expeditionary luxury boat" and I have a feeling that, in the middle of the building process, his health got worse or his priorities shifted, resulting in less attention paid and lower priority placed. Have no way to know "why", but the lack of QC and process by the contracting firm is mind-boggling for a $10M+ project. I agree. You'd think that at the very least, the last guy to head the project would have gone over everything with a fine toothed comb, just to cover his _own_ ass, let alone the company's. shrug Scary thought: Is this what's coming out of our colleges nowadays? With all the computer design tools they still have to test the hull: https://en.wikipedia.org/wiki/Inclining_test "The metacentric height (GM), which dominates stability, can be estimated from the design, but an accurate value must be determined by an inclining test." http://foxtrotalpha.jalopnik.com/wat...g-h-1728578936 A doomed Japanese cruiser temporarily outmaneuvering dive bombers: http://www.daveswarbirds.com/navalwa...pics/nachi.jpg --jsw |
Seven years of metalworking. I am humbled
On Sun, 28 Aug 2016 07:28:47 -0400, "Jim Wilkins"
wrote: "Larry Jaques" wrote in message .. . On Sat, 27 Aug 2016 21:47:07 -0500, Ignoramus19573 wrote: On 2016-08-27, dpb wrote: On 08/26/2016 5:38 PM, Ignoramus12311 wrote: ... Some rich guy from Iowa was building a dream "expeditionary luxury boat" and I have a feeling that, in the middle of the building process, his health got worse or his priorities shifted, resulting in less attention paid and lower priority placed. Have no way to know "why", but the lack of QC and process by the contracting firm is mind-boggling for a $10M+ project. I agree. You'd think that at the very least, the last guy to head the project would have gone over everything with a fine toothed comb, just to cover his _own_ ass, let alone the company's. shrug Scary thought: Is this what's coming out of our colleges nowadays? With all the computer design tools they still have to test the hull: https://en.wikipedia.org/wiki/Inclining_test "The metacentric height (GM), which dominates stability, can be estimated from the design, but an accurate value must be determined by an inclining test." GIGO, perhaps? And the numbers may be few, but there are architects and engineers out there who always test the limits, often with disastrous results. Or, what if it was a young crew of builders who had celebrated their joy at landing a $10m job a bit too early? Kinda like the brilliant move Lochte made recently... http://foxtrotalpha.jalopnik.com/wat...g-h-1728578936 A doomed Japanese cruiser temporarily outmaneuvering dive bombers: http://www.daveswarbirds.com/navalwa...pics/nachi.jpg I've always been awed at the angles to which destroyers and carriers roll during emergency turns, as seen in WWII movies. The cooks must hate that. Do warships have the ballast shifting capabilities the passenger cruise ships use to smooth out high/heavy seas? -- The great thing about getting older is that you don't lose all the other ages you've been. -- Madeleine L'Engle |
Seven years of metalworking. I am humbled
"Larry Jaques" wrote in message
... On Sun, 28 Aug 2016 07:28:47 -0400, "Jim Wilkins" wrote: "Larry Jaques" wrote in message . .. On Sat, 27 Aug 2016 21:47:07 -0500, Ignoramus19573 wrote: On 2016-08-27, dpb wrote: On 08/26/2016 5:38 PM, Ignoramus12311 wrote: ... Some rich guy from Iowa was building a dream "expeditionary luxury boat" and I have a feeling that, in the middle of the building process, his health got worse or his priorities shifted, resulting in less attention paid and lower priority placed. Have no way to know "why", but the lack of QC and process by the contracting firm is mind-boggling for a $10M+ project. I agree. You'd think that at the very least, the last guy to head the project would have gone over everything with a fine toothed comb, just to cover his _own_ ass, let alone the company's. shrug Scary thought: Is this what's coming out of our colleges nowadays? With all the computer design tools they still have to test the hull: https://en.wikipedia.org/wiki/Inclining_test "The metacentric height (GM), which dominates stability, can be estimated from the design, but an accurate value must be determined by an inclining test." GIGO, perhaps? And the numbers may be few, but there are architects and engineers out there who always test the limits, often with disastrous results. Or, what if it was a young crew of builders who had celebrated their joy at landing a $10m job a bit too early? Kinda like the brilliant move Lochte made recently... http://foxtrotalpha.jalopnik.com/wat...g-h-1728578936 A doomed Japanese cruiser temporarily outmaneuvering dive bombers: http://www.daveswarbirds.com/navalwa...pics/nachi.jpg I've always been awed at the angles to which destroyers and carriers roll during emergency turns, as seen in WWII movies. The cooks must hate that. Do warships have the ballast shifting capabilities the passenger cruise ships use to smooth out high/heavy seas? A Marine who served on this ship https://en.wikipedia.org/wiki/USS_Inchon told me the only ballast that shifted when the ship rolled in a bad storm was the flood of vomit on the deck in their quarters. |
Seven years of metalworking. I am humbled
On Sat, 27 Aug 2016 19:58:08 -0700, Larry Jaques
wrote: On Sat, 27 Aug 2016 21:47:07 -0500, Ignoramus19573 wrote: On 2016-08-27, dpb wrote: On 08/26/2016 5:38 PM, Ignoramus12311 wrote: ... Some rich guy from Iowa was building a dream "expeditionary luxury boat" and I have a feeling that, in the middle of the building process, his health got worse or his priorities shifted, resulting in less attention paid and lower priority placed. Have no way to know "why", but the lack of QC and process by the contracting firm is mind-boggling for a $10M+ project. I agree. You'd think that at the very least, the last guy to head the project would have gone over everything with a fine toothed comb, just to cover his _own_ ass, let alone the company's. shrug Scary thought: Is this what's coming out of our colleges nowadays? Unfortunately..yes. However such things are all to common as witnessed by other YouTube videos on the same subject. Gunner --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
Seven years of metalworking. I am humbled
On Sun, 28 Aug 2016 13:16:02 -0400, "Jim Wilkins"
wrote: "Larry Jaques" wrote in message .. . I've always been awed at the angles to which destroyers and carriers roll during emergency turns, as seen in WWII movies. The cooks must hate that. Do warships have the ballast shifting capabilities the passenger cruise ships use to smooth out high/heavy seas? A Marine who served on this ship https://en.wikipedia.org/wiki/USS_Inchon told me the only ballast that shifted when the ship rolled in a bad storm was the flood of vomit on the deck in their quarters. Wow, after hearing that, I wonder if it's too late to join the Marines! Erk... -- The great thing about getting older is that you don't lose all the other ages you've been. -- Madeleine L'Engle |
Seven years of metalworking. I am humbled
On Sun, 28 Aug 2016 17:17:05 -0700, Gunner Asch
wrote: On Sat, 27 Aug 2016 19:58:08 -0700, Larry Jaques wrote: On Sat, 27 Aug 2016 21:47:07 -0500, Ignoramus19573 wrote: On 2016-08-27, dpb wrote: On 08/26/2016 5:38 PM, Ignoramus12311 wrote: ... Some rich guy from Iowa was building a dream "expeditionary luxury boat" and I have a feeling that, in the middle of the building process, his health got worse or his priorities shifted, resulting in less attention paid and lower priority placed. Have no way to know "why", but the lack of QC and process by the contracting firm is mind-boggling for a $10M+ project. I agree. You'd think that at the very least, the last guy to head the project would have gone over everything with a fine toothed comb, just to cover his _own_ ass, let alone the company's. shrug Scary thought: Is this what's coming out of our colleges nowadays? Unfortunately..yes. However such things are all to common as witnessed by other YouTube videos on the same subject. I've seen all sorts of yachts slung over the dockside and dropped out of a pair of slings which had no connection for stability, nor did the load leveler bar (whatver that's called.) How do all those lousy crane operators get away with that kind of crap and retain their licensing? -- The great thing about getting older is that you don't lose all the other ages you've been. -- Madeleine L'Engle |
Seven years of metalworking. I am humbled
On Sun, 28 Aug 2016 19:31:00 -0700, Larry Jaques
wrote: On Sun, 28 Aug 2016 17:17:05 -0700, Gunner Asch wrote: On Sat, 27 Aug 2016 19:58:08 -0700, Larry Jaques wrote: On Sat, 27 Aug 2016 21:47:07 -0500, Ignoramus19573 wrote: On 2016-08-27, dpb wrote: On 08/26/2016 5:38 PM, Ignoramus12311 wrote: ... Some rich guy from Iowa was building a dream "expeditionary luxury boat" and I have a feeling that, in the middle of the building process, his health got worse or his priorities shifted, resulting in less attention paid and lower priority placed. Have no way to know "why", but the lack of QC and process by the contracting firm is mind-boggling for a $10M+ project. I agree. You'd think that at the very least, the last guy to head the project would have gone over everything with a fine toothed comb, just to cover his _own_ ass, let alone the company's. shrug Scary thought: Is this what's coming out of our colleges nowadays? Unfortunately..yes. However such things are all to common as witnessed by other YouTube videos on the same subject. I've seen all sorts of yachts slung over the dockside and dropped out of a pair of slings which had no connection for stability, nor did the load leveler bar (whatver that's called.) How do all those lousy crane operators get away with that kind of crap and retain their licensing? A boat dropped or set horizontally into the water level is at its most stable position. Did you read the report? A boat being slid stern first into the water is not in its most stable conditions. As the report states, "Stern-first launching on an angled ramp or incline presents a stability issue that large vessels face only when first entering the water. The large trim angle causes the vessel's stern to become buoyant while the bow is supported on a cradle. This can cause a momentary negative righting arm and, without additional supports at the bow constraining the vessel from rolling, necessitates getting the hull into the water quickly to obtain full stability -- cheers, John B. |
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