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#62
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Catamarans have something extra....
On Tue, 21 Aug 2007 15:37:21 GMT, (Richard
Casady) wrote: On Tue, 21 Aug 2007 09:19:56 +0700, wrote: On Mon, 20 Aug 2007 22:42:06 GMT, (Richard Casady) wrote: On Mon, 20 Aug 2007 15:49:24 -0500, "KLC Lewis" wrote: It is my considered opinion that all containers should be made so that they will sink if they go aglub. They will unless full of low density water resistant cargo. The doors on the boxes are not watertight. Electronics, with all that foam, just won't sink. CRT's are bouyant. So is wood. Depends entirely on the cargo. With the right cargo a boxboat is basically unsinkable. Read the empty weight stenciled on one that I spotted on I-80. Something over 8000 lbs. and they would weigh over 40 tons if full of water. That is way too heavy for a boxboat, some of those carry 8 000 containers. Those ships will not carry 300 000 tons. that is ridiculous, so the boxes have to weigh much less. They mostly start out very bouyant, but they are not watertight, like I said .Even so they can't be guaranteed to sink. They will take quite a while to, however. even if they do, eventually. A container washed off a ship and spilled a cargo of bathtub ducks. Scientists collected data on currents for years. Had it not come open, it would not have sunk until it dissolved into rust. There are the floating oil drums as well. Casady Actually container ships are rated in 20 ft equivalent containers, The figure I gave was for a twenty foot box. Seemed a lot, so I refigured and got the same forty tons. I used ' The Calculator That Takes No Prisoners,' the HP 48. The Chinese are building some 90 000 ton boxboats. To big for the Canal. Casady If I'm not mistaken the maximum total weight of a 20 ft. container is 35,000 lbs., and a 40 ft. container 45,000 lbs. I believe that the Emma Maersk is considered the largest container carrier in the world with a capacity of at least 11,000 TUE's.. Length 396 M, Breadth 56 M, Draft 30 M. No mention of displacement. 110,000 BHP, a cruising speed of 27K and a crew of 13. Maresk has the reputation of under stating the capacity of their ships and outside estimates of capacity are in the range of 14,000 TEU's giving a possible cargo capacity of 245,000 tons. Bruce in Bangkok (brucepaigeATgmailDOTcom) |
#63
posted to alt.sailing.asa,rec.boats.cruising
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Catamarans have something extra....
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#64
posted to alt.sailing.asa,rec.boats.cruising
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Catamarans have something extra....
On Wed, 22 Aug 2007 08:10:59 +0700, wrote:
Actually container ships are rated in 20 ft equivalent containers, The figure I gave was for a twenty foot box. Seemed a lot, so I refigured and got the same forty tons. I used ' The Calculator That Takes No Prisoners,' the HP 48. The Chinese are building some 90 000 ton boxboats. To big for the Canal. The 8000 pounds figure was empty weight, and the 40 ton figure was the displacement, the weight, at 63 pounds/cubic foot, of a chunk of water 8x8x20 feet. At 35 000 lbs a 20 would float with half of it out of the water. The original question was if the could they be made to sink and I pointed that if they started out that heavy , the all up weight comes to a ridiculous total for the ships. As it is, a container of machinery will slowly sink, but foam packing may keep a box,or enough of them, the boxboat itself, afloat until it lots of rusting has occured. If I'm not mistaken the maximum total weight of a 20 ft. container is 35,000 lbs., and a 40 ft. container 45,000 lbs. Twice as big as a 20 would translate to 70 000 pounds for a 40, not 35k. 45 000 does sound reasonable for something light enough to be legal on the roads, however. I believe that the Emma Maersk is considered the largest container carrier in the world with a capacity of at least 11,000 TUE's.. Length 396 M, Breadth 56 M, Draft 30 M. No mention of displacement. 110,000 BHP, a cruising speed of 27K and a crew of 13. Crew of 13? One watch officer, one on the wheel, and one lookout times three shifts. Plus a cook, the skipper, and the chief engineer. Twelve right there. The seven masted schooner Thomas Lawson, had steam winches to work the sails, and a crew of 18, and I believe Lakers mostly have a crew of 29. Maresk has the reputation of under stating the capacity of their ships and outside estimates of capacity are in the range of 14,000 TEU's giving a possible cargo capacity of 245,000 tons. Go to www.pancanal.com to watch ships go through the locks in the Panama Canal. Mostly boxboats. Casady |
#65
posted to alt.sailing.asa,rec.boats.cruising
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Catamarans have something extra....
"Richard Casady" wrote in message ... The original question was if the could they be made to sink and I pointed that if they started out that heavy , the all up weight comes to a ridiculous total for the ships. As it is, a container of machinery will slowly sink, but foam packing may keep a box,or enough of them, the boxboat itself, afloat until it lots of rusting has occured. How about passing international law that all shipping containers must be loaded, either with cargo, mixed cargo or cargo and ballast, so as to make them negatively buoyant? Might complicate loading a bit, but would increase safety at sea immensely. |
#66
posted to alt.sailing.asa,rec.boats.cruising
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Catamarans have something extra....
On Wed, 22 Aug 2007 15:32:14 GMT, (Richard
Casady) wrote: On Wed, 22 Aug 2007 08:10:59 +0700, wrote: Actually container ships are rated in 20 ft equivalent containers, The figure I gave was for a twenty foot box. Seemed a lot, so I refigured and got the same forty tons. I used ' The Calculator That Takes No Prisoners,' the HP 48. The Chinese are building some 90 000 ton boxboats. To big for the Canal. The 8000 pounds figure was empty weight, and the 40 ton figure was the displacement, the weight, at 63 pounds/cubic foot, of a chunk of water 8x8x20 feet. At 35 000 lbs a 20 would float with half of it out of the water. The original question was if the could they be made to sink and I pointed that if they started out that heavy , the all up weight comes to a ridiculous total for the ships. As it is, a container of machinery will slowly sink, but foam packing may keep a box,or enough of them, the boxboat itself, afloat until it lots of rusting has occured. Yes, I did sort of miss the point there a bit. According to the Export911.com website the standard dimensions of a 20 ft, container are 19.875 X 8 X 8.5 or 9.5 with the 8.5 dimension referred to as a "Standard Container". The standard Tare weight is 1,800 - 2,400 Kg.(3, 968 - 5,291 Lbs.) So, using your weight of water a 20 TUE would displace 85,145 lbs less the tare weight of, say 4639lbs and would require need to be nearly full of water to sink. Empty. As "stuff" seems to be mostly packed with plenty of styrofoam packing it is likely that most containers are floating for a substantial length of time after they are lost. If I'm not mistaken the maximum total weight of a 20 ft. container is 35,000 lbs., and a 40 ft. container 45,000 lbs. The standard for international shipments is 24,000 Kg ( 52.,900 lbs) and 30,480 Kg. (67,200 Lbs) Can't remember where I got the lower numbers I initially quoted. Twice as big as a 20 would translate to 70 000 pounds for a 40, not 35k. 45 000 does sound reasonable for something light enough to be legal on the roads, however. I believe that the Emma Maersk is considered the largest container carrier in the world with a capacity of at least 11,000 TUE's.. Length 396 M, Breadth 56 M, Draft 30 M. No mention of displacement. 110,000 BHP, a cruising speed of 27K and a crew of 13. Crew of 13? One watch officer, one on the wheel, and one lookout times three shifts. Plus a cook, the skipper, and the chief engineer. Twelve right there. The seven masted schooner Thomas Lawson, had steam winches to work the sails, and a crew of 18, and I believe Lakers mostly have a crew of 29. The engine room crew work a standard 8 hour day with annunciators in the engineer's quarters. Direct engine control from the bridge. At night, two people on watch., maximum. The "autopilot and the chart plotter" steer the boat and the O.O.D. writes up reports and MAYBE there is a man on watch. Say, Captain, two watch keepers X three shifts, Cook, Two deck hands and a three man engineering crew...... Maresk has the reputation of under stating the capacity of their ships and outside estimates of capacity are in the range of 14,000 TEU's giving a possible cargo capacity of 245,000 tons. Go to www.pancanal.com to watch ships go through the locks in the Panama Canal. Mostly boxboats. The world's freight travels by container. Try and get old fashioned "deck cargo" any more. We were trying to ship a 28 ft. sloop back to the west coast and "luckily" there was a conventional cargo boat that ran back and forth between two ports on the east coast and Phuket, Thailand carrying raw rubber. Otherwise the boat would have to have been shipped on a container carrier and billed at the cost of the number of containers displaced by the boat. Plus the cradle would have to have standard container hold downs and lifting eyes. It ended up as a "no sale" as we couldn't get it back to the U.S. at a cost much less then the selling price. .. Bruce in Bangkok (brucepaigeATgmailDOTcom) |
#67
posted to alt.sailing.asa,rec.boats.cruising
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Catamarans have something extra....
wrote in news:qaupc3h03p9djjkjr2fidcn3tmfhs02em2@
4ax.com: Crew of 13? One watch officer, one on the wheel, and one lookout times three shifts. Plus a cook, the skipper, and the chief engineer. Twelve right there. The seven masted schooner Thomas Lawson, had steam winches to work the sails, and a crew of 18, and I believe Lakers mostly have a crew of 29. The engine room crew work a standard 8 hour day with annunciators in the engineer's quarters. Direct engine control from the bridge. At night, two people on watch., maximum. The "autopilot and the chart plotter" steer the boat and the O.O.D. writes up reports and MAYBE there is a man on watch. Say, Captain, two watch keepers X three shifts, Cook, Two deck hands and a three man engineering crew...... Where you folks get your versions of ship's crew is beyond me. No such thing as an OOD on Merchant ships. Engineers have alarms in rooms for duty engineer during night. Auto pilot normally steering but only few have GPS and waypoints inputed to make course changes. Master does not spend his day on bridge. Maresk has the reputation of under stating the capacity of their ships and outside estimates of capacity are in the range of 14,000 TEU's giving a possible cargo capacity of 245,000 tons. Go to www.pancanal.com to watch ships go through the locks in the Panama Canal. Mostly boxboats. The world's freight travels by container. Try and get old fashioned "deck cargo" any more. We were trying to ship a 28 ft. sloop back to the west coast and "luckily" there was a conventional cargo boat that ran back and forth between two ports on the east coast and Phuket, Thailand carrying raw rubber. Otherwise the boat would have to have been shipped on a container carrier and billed at the cost of the number of containers displaced by the boat. Plus the cradle would have to have standard container hold downs and lifting eyes. It ended up as a "no sale" as we couldn't get it back to the U.S. at a cost much less then the selling price. Plenty of "breakbulk" still running.... alternate method to ship yachts is on an "carcarrier" |
#68
posted to alt.sailing.asa,rec.boats.cruising
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Catamarans have something extra....
On Thu, 23 Aug 2007 06:05:01 -0000, otnmbrd
wrote: wrote in news:qaupc3h03p9djjkjr2fidcn3tmfhs02em2@ 4ax.com: Crew of 13? One watch officer, one on the wheel, and one lookout times three shifts. Plus a cook, the skipper, and the chief engineer. Twelve right there. The seven masted schooner Thomas Lawson, had steam winches to work the sails, and a crew of 18, and I believe Lakers mostly have a crew of 29. The engine room crew work a standard 8 hour day with annunciators in the engineer's quarters. Direct engine control from the bridge. At night, two people on watch., maximum. The "autopilot and the chart plotter" steer the boat and the O.O.D. writes up reports and MAYBE there is a man on watch. Say, Captain, two watch keepers X three shifts, Cook, Two deck hands and a three man engineering crew...... Where you folks get your versions of ship's crew is beyond me. No such thing as an OOD on Merchant ships. Engineers have alarms in rooms for duty engineer during night. Auto pilot normally steering but only few have GPS and waypoints inputed to make course changes. Master does not spend his day on bridge. Basically you are repeating what I said - explaining how/why the Maresk boat operated with a crew of 13 people. Annunciators in the engineers quarters, autopilot steering. I did use the term "chart plotter" but you will, note the inverted commas" I have no idea how the bridge crew refer to their electronic navigation system but I'm certainly not naive enough to think that these ships are navigated by sextant. Maresk has the reputation of under stating the capacity of their ships and outside estimates of capacity are in the range of 14,000 TEU's giving a possible cargo capacity of 245,000 tons. Go to www.pancanal.com to watch ships go through the locks in the Panama Canal. Mostly boxboats. The world's freight travels by container. Try and get old fashioned "deck cargo" any more. We were trying to ship a 28 ft. sloop back to the west coast and "luckily" there was a conventional cargo boat that ran back and forth between two ports on the east coast and Phuket, Thailand carrying raw rubber. Otherwise the boat would have to have been shipped on a container carrier and billed at the cost of the number of containers displaced by the boat. Plus the cradle would have to have standard container hold downs and lifting eyes. It ended up as a "no sale" as we couldn't get it back to the U.S. at a cost much less then the selling price. Plenty of "breakbulk" still running.... alternate method to ship yachts is on an "carcarrier" Sure, and how many car carriers do you think are running between South Thailand and the West Coast of the US? The ones that run from around Bangkok are all under contract to Toyota or one of the other Japanese companies and they won't talk to you. Their schedules are coordinated with the factory and the sales forces and they have spare room. Bruce in Bangkok (brucepaigeATgmailDOTcom) |
#69
posted to alt.sailing.asa,rec.boats.cruising
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Catamarans have something extra....Correction
On Thu, 23 Aug 2007 06:05:01 -0000, otnmbrd
wrote: wrote in news:qaupc3h03p9djjkjr2fidcn3tmfhs02em2@ 4ax.com: Much snipped cost much less then the selling price. Plenty of "breakbulk" still running.... alternate method to ship yachts is on an "carcarrier" Sure, and how many car carriers do you think are running between South Thailand and the West Coast of the US? The ones that run from around Bangkok are all under contract to Toyota or one of the other Japanese companies and they won't talk to you. Their schedules are coordinated with the factory and the sales forces and they have spare room. The line should have read with the factory and the sales forces and they have no spare room. Bruce in Bangkok (brucepaigeATgmailDOTcom) |
#70
posted to alt.sailing.asa,rec.boats.cruising
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Catamarans have something extra....
On Thu, 23 Aug 2007 06:05:01 -0000, otnmbrd
wrote: wrote in news:qaupc3h03p9djjkjr2fidcn3tmfhs02em2@ 4ax.com: Where you folks get your versions of ship's crew is beyond me. In my case, pure guesswork. I can see getting by without the lookout and/or the helmsman. The Captain is stuck with all the paperwork. And that has to be damn near full time? Or is it? Could be a lot less of that than there used to be, if it is now mostly done on shore. So, you got in your sneer, now tell us the true facts. Plenty of "breakbulk" still running... You see them on the webcam at the canal. Casady |
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