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    Whether an object will float or sink is defined by old Archimedes' principle.

    It is not possible to sink a tanker like this by loading normal crude oil.
    The tanks will overflow before the critical weight is reached.

    On this class of tankers, the cargo area is divided into 18 tanks.
    Three sideways, and 6 lengthwise, but of slightly different capacity.

    The loading is accurately planned to minimize the stress on the hull.
    Normally just 2 -3 tanks are being filled/discharged simultaneously to have control of trim and list.
    Sometimes complicated by having more than one type of oil - not to be mixed.
    Nearing the end of the discharge, ballast water is filled into some of the empty tanks.

    In the Europort incident, the middle group of tanks must have been discharged
    - out of the normal sequence.

    When normally operated, a ship like this is solid, but also quite flexible.
    In rough seas and fully loaded one can see the ship hog and sag with the bare eye.

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      Originally posted by Nichu View Post
      When normally operated, a ship like this is solid, but also quite flexible.
      In rough seas and fully loaded one can see the ship hog and sag with the bare eye.
      I'm with you up to that bit, but I never realised that they flexed, Nichu. Thank you very much for your patience in explaining.
      Ivy

      "To thine own self be true.......
      Thou canst not then be false to any man."

      Comment


        There are some news about the Rhine-Barge. They had to place a second ponton to secure her, because the current has washed out a 6m deep hole under the barge. At this moment they test with some smaller barges, if it is secure enough to let the traffic pass one-way. They installed a webcam, which will follow the rescue operations:

        http://www.swr.de/tv/-/id=2798/nid=2...whr/index.html

        There is also a video. The responsible persons tell about the necessarity of turning the barge before being able to reach the valves to unload her. The other possibility is to drill small holes in the body to let the fluid flow very slowly in the river so that it is at maximum thinning and not dangerous for the environment.

        http://www.swr.de/tv/-/id=2798/did=7...5f5/index.html

        Not to forget: The two missed seamen weren't found until now. Some people saw a body drifting in the river about 25km lower...
        Last edited by Ralf__; January 20th, 2011, 17:35.
        Lofoten '07 ...... Nordnorge '11

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          heard it on the news today,2 cranebarges are there now but the third comming from holland ain't there jet,and without that one they cant start.
          was yesterday afternoon in Duisburg at the inlandports,foll with vessels, waiting till the thein is free
          best regards Thijs

          Comment


            New video showing the first barges passing by and the arrival of the first cranes. The ship continues to move, because more holes are washed out and she slides deeper into the river.

            http://www.swr.de/nachrichten/rp/-/i...5b4/index.html
            Lofoten '07 ...... Nordnorge '11

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              All three cranes have reached the capsized ship. They will now secure here and examine the hull. Divers shall also go inside and search the two missed seamen. Traffic up the river is opened. Larger ships have to be towed by tugboats. Traffic down the river is still closed. Webcam is working (see post #213).
              Lofoten '07 ...... Nordnorge '11

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                The salvage team (Mammoet from Netherland) is now drilling holes into the tanks to control their content. The say, they must empty four of the seven tanks to lift and turn her. One tank contains a mixture od water, sulfuric acid and hydrogen. This mixture produced an explosive gas. They pumped nitrogen into the tank to press out this gas.
                More that 300 ships are waiting about 100km up the river to continue their way down the river. The authorities collect information about the cargo to organize a possible clearance for their voyages.
                Lofoten '07 ...... Nordnorge '11

                Comment


                  A second webcam is showing the situation from another viewpoint.

                  http://www.rhein-zeitung.de/regionales/webcam.html
                  Lofoten '07 ...... Nordnorge '11

                  Comment


                    Indian warship sunk during 'day at sea' for military families

                    http://news.blogs.cnn.com/2011/02/01...milies/?hpt=T2


                    Videos:

                    http://www.ndtv.com/video/player/new...on-fire/189725

                    http://www.ndtv.com/video/player/new...in-fire/189627
                    Last edited by Remarc; February 2nd, 2011, 19:18.

                    Comment


                      Originally posted by Remarc View Post
                      There is another video here:

                      http://www.ndtv.com/video/player/new...in-fire/189627

                      But, what I find strange is that the animation and the video looks different.

                      The container vessel is coming in on starboard side: wouldn't it be the navy ship's duty to alter the course?

                      Hmmm... something does not seem to be right here...
                      With best regards from Jan-Olav Storli

                      Administrator and Owner of CaptainsVoyage.
                      Main page: http://www.captainsvoyage.com

                      Surround yourself with positive, ethical people who are committed to excellence.

                      Comment


                        Hey, you're the Captain, by what we have on these videos, how do you see this collision unfolding and who is at fault?

                        Comment


                          Originally posted by Remarc View Post
                          Hey, you're the Captain, by what we have on these videos, how do you see this collision unfolding and who is at fault?
                          By the way I see both the animation and the video, I would say the Navy ship is at fault.... but then, I do not know what was agreed over radio before the collision, neither do I know how the water ways in the area are.
                          With best regards from Jan-Olav Storli

                          Administrator and Owner of CaptainsVoyage.
                          Main page: http://www.captainsvoyage.com

                          Surround yourself with positive, ethical people who are committed to excellence.

                          Comment


                            One quick question. Both merchant ships had Pilots on board. Do war ships require Pilots?

                            Comment


                              News about the Rhine Barge:

                              During the weekend the salvage teams pumped the acid intom other ships. Now they detected that the stability changed dramatic and they fear the barge can break in two parts. Therefore they let now flow "slowly" the acid into the river! Than means 80 tons per hour or 12 liter per second. They don't expect any ecologic damages, they say. Unless they always stated there were no losses of the acid, now it is told that about 900 tons already disappeared in the river! If the barge will return to a stabile position they will continue the pumping in other ships. A laboratory ship measures continuously the water quality down the river. The drinking water originators down the river are informed.
                              Meanwhile also ships may pass down the river.

                              Video from last Thursday: http://www.swr.de/nachrichten/rp/-/i...e0r/index.html
                              Lofoten '07 ...... Nordnorge '11

                              Comment


                                The salvage team will today complete the clearing of the tanks. The remaining amounts of acid will stay in the ship, because they can't reach these. On Sunday all traffic - ships, trains and cars - in the Rhine valley will be stopped and the team will try to lift the barge and turn her. A special report is announced in the regional TV for the evening. I'll keep you informed.
                                Lofoten '07 ...... Nordnorge '11

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