Seafood can be roughly divided into four categories: fish, crustaceans, such as shrimps and crabs, shellfish and aquatic plants. From the umami point of view, crustaceans and shellfish generally taste the best, and the overall price is relatively close to the people. Today, we will mainly talk about shellfish. When it comes to shellfish, scallops, ivory mussels, oysters, bergamot and so on. . .

of course, no matter how high or low the price is, it still costs money to buy these shellfish, but there is also a way to deduct them by yourself at the seaside, such as the Danish oysters that were stir-fried in the previous paragraph. However, don't most people have the money and time to go to Europe to eat oysters? Relatively speaking, there is another way to get it, that is, by taking the ship "out" ...

Most of the photos of the ship you see, especially those in the dock, are new and smooth, but when the ship sails in the water for a period of time, there will always be various aquatic organisms attached. On the one hand, these organisms increase the weight of the hull (each one is not big, so it adds up), because the uneven surface increases the resistance.

The bottoms of new ships are shiny.

When the ship returns to the dock again, the image will be generally miserable, so scraping the bottom of the ship has become an annual thing for ships. (The following contents are not recommended for parents who are eating seafood.)

Pay attention to the four "blocks" on the side of the propeller, which are sacrificial yang, not attachments

The hull with a lot of barnacles attached

Of course, these attachments are actually quite common seafood. . . . Today, Xiaobian will introduce several main attachments, among which the most attached ones, such as the one shown in the above picture, are called barnacles. Generally, there are two kinds of barnacles attached, one is the common barnacle with a cone shape as shown in the above picture, and the other is the gooseneck barnacle, also known as bergamot or cantaloupe in China.

Boats covered with gooseneck barnacles

Barnacles are of course not delicious when they are small, but when they grow up, they still have a certain amount of meat. At the same time, barnacles on some ships that have been immersed in seawater for a long time may grow very big and naturally have meat.

barnacles can also grow very big

According to the tradition of China people, as long as a thing is organic, especially what we classify as "fleshy", it can be asked three classic questions in philosophy: "Can it be eaten?" "Is it delicious?" "How does it eat?" Surprised to hear this "three questions between heaven and man", I seem to hear the roar of countless "ghosts" in Guijie garbage dump "I can still save it"

The barnacle soup, a classic creature wiped out by China people's mouths, is generally sold, and it is said to taste good.

Barnacles are no exception. If traditional barnacles are eaten less, then goose-neck barnacles are eaten more, and it is not just a "bergamot" in China. Europeans love gooseneck barnacles even more.

"bergamot" after breaking

Although the "tail" of the gooseneck barnacle is relatively long, its edible part is mainly in the hard shell of the head, which is not cheap in the European market.

Goose-necked barnacles on the European market

In China, it seems that one of the main ways for bergamot is to stir-fry vegetables, such as ordinary shellfish, or just cook scallops and eat them with vinegar.

boiled barnacles

Europeans make barnacles with goose necks in a variety of ways, although it may not seem to suit China's taste. . . . Stewed aquatic products with tomatoes always feel like dark cooking ........

Oysters are second only to barnacles on the hull. Oysters have long been Chinese and western delicacies, but they are also a headache for ships.

Oysters are not uncommon on the hull.

How to eat oysters? We don't need to say more about this. Stir-fry, cook and stew, both raw and cooked are good. . . By the way, which big boss told me why cooking soft-fried oysters at home is always soft-pedaled, and how did the restaurant do it?

Oyster is a good thing, and the west thinks it has aphrodisiac effect.

After Xiaobian used oysters to refer to a female organ, I was suddenly puzzled by the use of My Uncle Yule in the primary school text. . . . . Some metaphors are really. . . . Well, think about the pictures described in the text. . . My mouth was watering when I was hungry in class. . . .

oyster with garlic, which is a must for barbecue,

competes with oyster for the second place, and the total amount is similar to that of Haihong. This kind of shell is very sharp, and in fact, there are a lot of shellfish attached to the hull.

There are many sea rainbows on the hull

In fact, there are more sea rainbows attached to the hull than oysters, but after all, this product doesn't seem to be very delicious. . . . . And as a cheap seafood, this product seems to be better as an ornament than eating directly. This product is also called mussels, sea eggs and so on.

It may be that the water content is low, and the taste is not as fresh as other shellfish.

Of course, some other shellfish are sometimes attached to the hull on a small scale, but the overall number is small, such as scallop shellfish in our general sense (but much less than barnacles and various oysters).

There may be many kinds of attachments at the bottom drain

Of course, this is not just scallops in our general sense, but for most foodies like Xiaobian, well, I don't care what they are as long as they are not poisonous and delicious. . . .

barnacles are commonly found on scallops

Of course, the attachments are not limited to shellfish, but also many plants and aquatic plants. Here is a picture of the state of the stones near the plagiarism line after low tide:

Please tell me how many kinds of seafood you see, ah no, seafood, ah no, aquatic creatures. The most conspicuous thing is to bring and sea cabbage. . . . . This is a stone that embodies biodiversity. Could someone please explain what the orange one below is? Of course, the proportion of plants attached to the hull will be less, but many ships will still be attached to various kinds of aquatic plants. But it is mostly found in inland river ships.

Small boat covered with aquatic plants

Sir, don't go away objectively. Would you like a refreshing seaweed dish/cabbage mixed with kelp for appetizing?

Of course, back to the issue of ships, these aquatic products are not good for ships. One is to increase the weight of the hull, the other is to increase the navigation resistance of the ship, and the third is that the attachments are corrosive to some extent, which will affect the hull. Fourth, after all, the bottom of the ship is not a smooth plate. Some equipment, such as the water inlet, is used for engine cooling and other purposes, such as fin stabilizer, such as bow side pushing. The more these structures are, the easier it is to attach aquatic organisms. These organisms either block the water inlet, affect the efficiency of water entry, or block some moving parts, resulting in sluggish operation. Therefore, these attachments should be cleaned regularly.

The wood stripped of the attachments is badly eroded

Comparison of the same propeller before and after cleaning

Because large ships do not often have the opportunity to enter the dock for dredging, and most of them are commercial passenger and cargo ships in the world, stopping the ship means reducing their income. Therefore, in addition to entering the dock to clean the attachments on the hull during overhaul, many modern companies have started underwater dredging business. When the ship is docked at the port to load and unload people and goods, divers go into the water to clean up some positions of the ship that are easy to attach to aquatic organisms. Of course, it is impossible to clean up a large area, but it can also effectively restore key parts.

Divers clean the hull

Divers hold a large electric "steel brush". In the early stage, metal brushes are used, and in the later stage, high-strength material brushes are used to grind and clean the attachments. In dry docks, cleaners use high-pressure water guns to wash the attachments down.

appearance of a cleaning brush

of course, it is dangerous for people to work underwater, so now there are some new cleaning machines that can be hung on the hull to clean the attachments on the hull.

If someone is interested in collecting enough shellfish from the ship, and even if there are shrimps lying on the hull of the ship that have not been cleaned for a long time, you can gather up a large pot of seafood chowder, such as the following:

I advise you not to eat it. After all, the underwater coatings of modern ships are toxic to alleviate the attachment of aquatic organisms. If it were not for these coatings, you might be able to harvest calcium carbonate from several cars within a few months after your ship sailed out. .....