Assalamualaikum, and welcome back to Orange Shots. I'm sure you must've heard about the latest incident. The Crimson Polaris. It grounded on the coast of Japan, then it refloated. After refloating, when this vessel was anchored, it broke into two. But why? That's the main question.
What exactly happened? This vessel had completed its voyage, she was almost ready for any kind of operation while at anchor. What exactly happened after grounding and anchoring that caused this ship to split into two? What really changed? Today, in this video, I'd like to educate you on this very topic. Let's begin our discussion with the cargo the ship carries. The ship's cargo has a central role in its split into two parts. The vessel was carrying wood chip.
But the ship was a bulker, it could carry any type of cargo in bulk form but the cargo it was carrying was wood chips. What are wood chips? These are all tiny pieces of wood that aren't needed anymore. These pieces are disposed of. That ship would carry wood chips and it had brought them to Japan. The vessel was mid-sized, its length was around 230 meters.
and its width, around 32 meters. Wood chip cargo isn't considered heavy cargo per se, but there's one little problem with wood chips. When you pour water over wood, or if water gets anywhere near wood, it absorbs it. Soaks it up. And when it soaks water up, its weight increases.
The same thing happened to that ship. The weight increase caused the shearing forces and bending movements to increase, causing the ship to split into two. Now, you must be wondering what "sharing forces" and "bending moments" are; the ones I just talked about. Before I tell you what they mean, let's figure out why the ship's weight increased. Why did the wood chips absorb water? The ship was at Japan's Hachinohe Port I think the Japanese pronounce this term differently.
When the ship was anchored the wind picked up speed the same way it did with Heng Tong 77. The wind picked up speed, and the currents are strong in Japan either way. These winds swept the ship ashore, and the ship lost its anchor. What happened in this case was, when the ship turned on its engine; and when an engine starts at a slow speed, it's unable to generate power. The ship couldn't steer well enough, ending up grounded.
But high tides caused the water level to rise; the ship refloated, and with the help of its engine, floated back to the anchorage. But before the ship was grounded, a problem had already occurred. Its hull had breached. A hull breach is when a ship's hull, i. e.
, its outer shell, breaks. Water enters through such fissures. The ship is loaded with wood chips. The wood chips absorb the water. And while bulk carriers come with bilge wells that can get rid of excess accumulated water, but in this case, the wood chips had absorbed all the water.
Due to the water absorption, the weight of that hull section increased. The ship still managed to anchor itself, however. But two things came into play: shearing force and bending movement. Let me tell you a bit about them. That will make things easier to understand.
A bulk carrier has different cargo holds, which are actually cargo compartments. Large areas for cargo storage. A ship is divided into small sections along its length, those sections are loaded with cargo. We call them holds or CCs, i. e.
, cargo compartments. These cargo compartments use up a lot of iron but it's useful in the sense that it keeps cargo from shifting during sea voyages, and it's easy to control any stress on the vessel, i. e. , the two forms of stress I just mentioned. These divisions lead to these two forces.
Bending movement and shearing force. What is a bending movement? Take for instance a rod if you want to bend that rod, you twist it, and it will bend. For example, let's take this one. Imagine that his rod is longer, you must have wooden shelves at home, take those for example. If I add some weight in the middle, it's going to flatten like this.
If I add some weight at both ends, it will be raised in the middle, the sides will curve downwards. This is called a vessel's bending movement. If this bending movement or stress is increased over a specified value, there's a risk that the vessel might permanently bend, or split into two parts. On to the second one: shearing force. What is that? Take a vessel's entire length, divided into small cargo compartments or holds.
Every hold has cargo inside. The cargo is divided this way: the weight difference between two adjacent holds with cargo mustn't be different, e. g. , one compartment being heavier compared to its adjacent one, weighing down on the hull plating. Now, let's take a break and have a look at this photo.
Doesn't this vessel look like it's been sawed down the middle? This is shearing, i. e. , that part of the ship was sheared off. When the wood chips absorbed the water, and they gained weight, the weight on the ship's central compartments increased, whereas the compartments on each side got lighter, and this caused the ship's shearing force and bending movements to increase. At the back of the ship is its engine and its accommodation.
That area has its own weight, then the hold next to that has the ship's standard weight. Next to that is the hold carrying the water-swollen wood chips. That hold was weighing the middle of the ship down, the aft was being weighed down, and the forward of the accommodation hold was being pushed up via the water's buoyancy. The buoyancy of water is the reason why ships float. The shearing forces increased, the bending movements were already there to begin with; that all caused the ship to shear off.
The ship's forward is still held by an anchor chain, and it's still kind of floating. The ship's stern has listed forward. Because the accommodation stands as is, with other compartments below, the forward has the hold, where water has seeped in, tilting the ship at an angle that causes the forward to list forward like you can see here. The ship's bow is still held by an anchor chain, because it has five still-watertight holds, and as long as those compartments stay watertight, that portion will keep on floating. So, that part floats, while the ship's stern has water in its front hold since it has sheared off.
You can see that the ship's accommodation has tilted forward too. What else is happening now? The ship has lost most of the wood chips, but they're hardly the problem. This is because wood chips are an organic material. They're made of wood, so if they end up in the water there could be a bit of pollution, but it's not that concerning. But the ship has started leaking oil because it's usually the bottom compartments that hold the oil for the main engine.
Again, the good part about this is since this area is present in a CCA now referred to as an ECA, i. e. , emission control area, I've already told you in another video. It's probably going to be diesel oil. It's going to evaporate but there's still going to be pollution.
Some of you commented on different videos, the most commonly asked question being: why is the oil that's coming out going in one direction? Why won't it spread around? The reason is that (water) currents are constantly moving; the Earth is round, it revolves, currents have one direction. This is why oil travels in one direction, instead of all directions. Of course, it depends on the circumstances as well. Now, what has gone right, and what has gone wrong? The ship had 21 crew members, Chinese and Filipino nationals, they have all been rescued. The fight against the oil spill is ongoing, all the tugs are busy with their salvaging duties.
All the cargo in the ship's bow may be salvaged, but the ship is obviously going to be TCL now. I don't think the owner will waste their money trying to get the ship to refloat, and get taken to the dry docks. I don't think that's going to happen. Japan's coast is famous for all of these things, strong currents, wings, and sometimes, storms as well. Because it's in the North of the Earth's northern hemisphere, the Earth revolves, the Equator, currents are formed, I've told you in plenty of my videos.
Japan gets typhoons as well. The winds getting stronger, the development of low pressure, causing the winds to blow away ships, are all pretty normal occurrences. Nothing new. But the poor owner lost their ship. They will get the insurance money, but it's not going to be the full amount, I believe.
But since they're the Japanese, their way of doing things are different. NYK had chartered the ship. NYK is a very responsible charter, they try to offer support as best they can. So I believe they're going to do the right thing, the owner may not have to suffer such huge losses. The ship was a Panama-flagged vessel, but that hardly matters in this case.
The ship was a 2008 build, so she wasn't too old. But the weather, combined with currents, swell, etc. , that causes quite a few accidents that otherwise wouldn't happen but this is a fact of sea life. And the larger the ship, the harder it will be hit by winds and currents, etc. The smaller the ship, the more diminished the damages to it.
As they say, a car that runs is bound to crash somewhere. It won't ever be fully safe, but the crew is safe, and that's the best part. At the same time, if you want to find out what happened to Heng Tong 77, i. e. , how she ran aground, do click on the end card.
If you want to know what happened to the Express Pearl, I'll link that in the end card as well. There's also a video about the Ever Given incident, so feel free to watch it. If you want to learn about the Bermuda Triangle, the Titanic incident, or the Titanic's sister ship, the Brittanic, I have videos about them on my channel as well. If you enjoyed today's video, don't forget to like it, share it, and subscribe to the channel as well. Take good care of yourselves, remember me in your prayers.
With tons of love to my Orange Shots family, and to-be Orange Shots family. This is me, Zahid Nisar, you're watching Orange Shots. Until my next video, ALLAH Hafiz.
Source : Orange Shots