What caused the sinking of a dry cargo ship in the Black Sea of Turkey?

This is caused by the weather. 65438+1October 17, the governor of the Turkish Black Sea coastal province of Baltin said, a ship named? Alvin? (Arvin) A dry cargo ship flying the Russian flag sank in the Inkum area of the Black Sea. Gounel said that it was estimated that 15 crew members were trapped in three lifeboats, and rescue work was about to begin. The local weather conditions are very bad, which makes it very difficult for rescuers to go to the accident area. There are no reports of casualties or the sinking of the rescue boat.

In fact, there is no braking system on the cargo ship, because there is no way for the cargo ship to brake urgently when driving in the water. Although we see that the speed of the cargo ship in the water is not very fast, it is impossible for the cargo ship to brake quickly because of its huge weight and strong inertia and the relatively small resistance of the hull to the water. In fact, if cargo ships want to stop, they must have a long braking distance, otherwise they can't stop, which is one of the reasons why cargo ships often collide. ?

However, for some high-end cargo ships, such as those equipped with adjustable pitch propellers, emergency braking can be carried out by changing the pitch of the propellers, thus generating reverse thrust; Of course, some propellers are equipped with full-rotation propellers, and they can brake by changing the thrust direction of the propeller to generate reverse thrust, but these methods can brake and make sharp turns, but they can't stop in a short time like car braking. And generally speaking, cargo ships only sail at high speed in the ocean. When the cargo ship approaches shallow water, the speed will naturally decrease. Even when the cargo ship is to dock, it needs tugboats to slowly move the cargo ship to the berth of the dock. ?

In fact, when cargo ships brake, it is very important to use anchors to brake, and this way has appeared very early. Early anchors were all made of big stones. Later, with the maturity of iron smelting technology, stone anchors were gradually replaced by iron anchors. Moreover, the current iron anchor is not so simple, but also divided into several parts, usually composed of anchor handle, anchor rod, anchor chain, anchor shackle and other parts. Moreover, the larger the tonnage of the cargo ship, the heavier the anchor is needed. Like the anchors of some ocean-going freighters, the combined weight can reach several hundred tons. And the requirements for anchoring are also very strict. The anchor must be controlled. We should also know that the manufacturing cost of anchorage is very high. Generally, when an anchor falls or breaks down at an anchorage, the shipowner will choose to salvage an anchor, but the price is not cheap, and it costs hundreds of thousands. When anchored, the location is also very particular. The most suitable place for anchoring is gravel, followed by silt. However, it should be noted that the seabed with rocks generally does not choose to anchor, mainly for fear that the anchor claws will hook the rocks and the ship will not be able to sail, so it can only anchor in the end.