Modern ships are very large contraptions, made mostly of ferrous metal. Even not the largest tankers and bulk carriers cost many millions. However, like any other thing, the vessel gradually wears out, gets old and becomes unusable. Several decades after launch, even the coolest tankers have to be scrapped. The question is: how much can the former owner help out in this matter?
Take oil tankers as an example. The construction of a "mediocre" oil tanker at a shipyard in the 1990s cost customers between US $ 100 million and US $ 150 million. In recent decades, the cost of building ships has increased even more, but everything else has risen in price. In addition, today mainly ships that entered service in the 1970s-1980s are being disposed of. Then tankers were much cheaper. Nevertheless, the cost of such ships, even at that time, tended to the amount of
$ 100 million. Of course, it's not just metal that costs so much, because a finished ship is also tons expensive high-tech equipment, and many years of work of thousands of specialists and tons non-ferrous metals.So how much can you bail out for a ship in recycling? Looking ahead, let's say: you can help out a lot, but several times less than the construction cost. This is because when merchant, passenger or even military ships set out on their last journey, in the overwhelming majority of cases they are handed over simply for scrap. The bottom line is that the cost of 1 ton of scrap is significantly lower than the cost of 1 ton of high-quality steel, which was purchased for the construction of a marine vehicle.
No less important is the fact that dismantling companies, as a rule, do not pay anything at all for the removed non-ferrous metals and removed equipment to those who give the ship for recycling. Of course, the percentage of non-ferrous metals in a tanker or dry-cargo ship relative to the total mass is negligible, but even in this case, the account still goes to tons of expensive materials.
One way or another, but the main source of income for the owner of the vessel during its disposal is black scrap metal. When the ship is dismantled, a payment is made for each tonne sawn. The average cost of ferrous scrap, depending on its quality on the world market, varies between 60-150 dollars for 1 ton (100 kg). However, how many tons of iron are there in the ship? The fact is that there is no need for utilizers to calculate the mass of the ship, because they pay for the scrap upon disassembly. However, some estimates can be made for everyone else.
The most important characteristic of a vessel is its displacement. The only problem is that there are many different types of displacement. In this case, we are interested in the so-called "light displacement"Or the displacement of an empty ship without fuel, supplies, cargo, etc. Measure it immediately after launching. Actually, this displacement, in fact, is the mass of the ship, since the displacement is the volume of water displaced by an object immersed in it. According to Archimedes' law, the mass of the displaced water is the mass of a body immersed in a liquid.
For a long time, the largest oil tanker on Earth was built in 1974 "Knock nevis». After the modernization, the total (largest) displacement of the tanker was 657,018 tons. At the same time, the deadweight of the vessel (the total maximum mass of all cargo on the vessel, including crew and stores) was 567,763 tons. Thus, the displacement of the empty "Nevis" was equal to 89 255 tons. It is not known how much it cost to build the ship, but the tanker was definitely worth much more than its average counterparts in the price category of about $ 100 million.
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The ship "Knock Nevis" was scrapped in 2009. If we take the most generous cost of ferrous scrap metal, then for the disposal of a huge tanker its owners rescued no more than 13 million 388 thousand dollars. As it is easy to calculate - this is approximately 7.5 times less than the construction of a cargo ship could have cost. Of course, there are exceptions to this scheme. The most parts are chemical tankers. Such vessels are equipped with huge stainless steel tanks. An exception is always made for such equipment (due to its size), and therefore the disposal of such a vessel will bring significantly more money.
If you want to know even more interesting things, then you should read about Where did the pirates of Somalia go? Are the most daring invaders of sea vessels.
A source: https://novate.ru/blogs/250821/60289/
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