Eighth Project 12700 minesweeper Lev Chernavin was laid down at Sredne-Nevsky Shipyard

The eighth Project 12700 mine defense ship (code Alexandrite), named Lev Chernavin, was laid down in St. Petersburg. The laying ceremony took place at the Sredne-Nevsky shipyard.

As previously reported, the formation of the hull of the new minesweeper began on July 10. In a hermetically mounted matrix, repeating the contours of the hull of the future ship, under the influence of negative pressure, the binder was impregnated with a binder in a special way laid layers of fiberglass. The impregnation process took about two days. The official groundbreaking ceremony was scheduled for 24 July.

The groundbreaking ceremony was attended by Deputy Commander-in-Chief of the Navy for Armaments Igor Mukhametshin, Chief Advisor to the General Director of USC Viktor Chirkov and Chief Designer of Project 12700 minesweepers Alexander Kalinin.

The new ship received the name of Lev Davydovich Chernavin - a Soviet submarine officer, Rear Admiral, who commanded submarine formations of the Northern fleet.

The new minesweeper will be the eighth ship in the line of Project 12700 Alexandrite, laid down at the Sredne-Nevsky shipyard and the last one built in the first series. Starting from the ninth, the minesweepers of this project will be built taking into account the changes made to the project during the operation of the first ships. The changes will mainly affect the automation of mine action weapons.

Minesweepers of the 12700 project are able to use the latest hydroacoustic stations located both on the ship itself and on remote-controlled and autonomous underwater vehicles, and they have an automated mine action control system. Able to use traditional and traditional weapons. The ships of the Alexandrite series have a unique hull made of monolithic fiberglass, formed by vacuum infusion.

The 12700 project was developed by the Almaz Central Marine Design Bureau for the Russian Navy. These mine defense ships have a displacement of about 890 tons, the length is 62 meters and the width of 10 meters, the crew has 44 man.

Comments

[svp67]

The new ship was named after Lev Davydovich Chernavin, a Soviet submarine officer, Rear Admiral, who commanded submarine formations of the Northern Fleet.

A strange name for a minesweeper ...

[Eldorado]

Why strange? According to your logic, in honor of Admiral Ushakov the sailing ship should have been named, not a destroyer? So what? And in honor of Askold a punt, not an RTO?

[Ryaruav]

and where are Lunin, Kotelnikov, Shchedrin, Bakhtin, Marinesko, Kucherenko, Tamman, Grischenko, Travkin and our other submariners who directly fought and won

[svp67]

Quote: El Dorado

Why strange?

Well, firstly, ADMIRAL, but in the name it is not, secondly, a submariner, and here is a minesweeper. The mine service of the fleet had enough and enough admirals ...

[Cyril G ...]

The strange thing is that our admirals have gone of two kinds turns out.
That is why the frigate is called ADMIRAL GORSHKOV or ADMIRAL KASATONOV, and minesweepers in honor of Rear Admiral Chernavin, for example, or Vice Admiral Shlemov for some reason Name Surname. Why is this so?

[Observer2014]

Quote: svp67

The new ship was named after Lev Davydovich Chernavin, a Soviet submarine officer, Rear Admiral, who commanded submarine formations of the Northern Fleet.

A strange name for a minesweeper ...

Yes. I support your opinion. This is a really strange choice. There is no logic.

[musorg]

Why did this name become strange?

[Imperial Technocrat]

At least 1 universal rocket launcher for 8 Onyxes or Calibers push there)

[Eldorado]

What for? This is a raid minesweeper, not a deep sea zone ship.

[Imperial Technocrat]

RTOs and corvettes with Caliber and Onyx are also not far-field ships.

[Dangerous]

Quote: Imperial Technocrat

RTOs and corvettes with Caliber and Onyx are also not far-field ships.

That is why they and MRK - small missile ships. The minesweeper is a little different.

[Cyril G ...]

Raid TSP is a very specific class of ships. Project 12700 is not a raid TSC.

[d ^ Amir]

I just wanted to ask, is he for the Ocean ???

[7,62x54]

The container will be placed on the deck if necessary

[svp67]

Quote: Imperial Technocrat

At least 1 universal rocket launcher for 8 Onyxes or Calibers push there)

And also a deck for aircraft take-off ... Well, just think, the ship's hull was made of composites so that it would have less iron, and you offer to put a whole mountain of iron on it

[Bashkirkhan]

Quote: svp67

And also a deck for taking off planes ...

And the main caliber of "Yamato" is that the schizomilitarists do not agree with the lesser mothers!

[Arthur 85]

It's made of plastic ... Even I, a supporter of the fact that missiles with containers hang even on the mast, and in order to buy all decommissioned tankers, and hook them on the CD, how much to drink (crossed out) they can take away - and I don't think they need a minesweeper rockets.

[Ryaruav]

just wondering how many such scans are needed according to the strategy of the General Staff of the Navy to ensure the safe exit of the ships from the bases on the coast of the Barents Sea

[Imperial Technocrat]

just wondering how many such scans are needed according to the strategy of the General Staff of the Navy to ensure the safe exit of the ships from the bases on the coast of the Barents Sea

8+

[Marconi41]

Quote: Imperial Technocrat

8+

To be honest, even 8 is a drop in the ocean of our needs for these ships. Hope for a new contract about this.

[Imperial Technocrat]

The question was about the Federation Council, read carefully. For all fleets, of course, more - several dozen

[Ryaruav]

sorry, you are deeply mistaken due to lack of knowledge of naval history and modern realities

[Bashkirkhan]

Quote: Ryaruav

how many such scans are needed according to the strategy of the General Staff of the Navy to ensure the safe exit of ships from the bases on the coast of the Barents Sea

I read that all fleets need about 50 minesweepers.

[Cyril G ...]

Yes, this figure was announced as the minimum necessary. It is necessary to remember the lessons of the Second World War, in principle, and in particular the Tallinn Passage - when most of the ships and vessels were killed by mines.

[codetalker]

Periodically, the theme comes up that our fleet has serious problems with minesweepers. Who follows this topic, tell me please, the minesweepers of this project are not suitable for all purposes, or are they not of high quality? Or, on the contrary, excellent, but the problem is in small quantities? Or is this project in perspective and solves this problem? Thank you in advance!

[Ryaruav]

first, we need a quantity with the appropriate quality, how much vmb do we have? decently and everything must be provided with mine defense, people think what kind of mines are in a nuclear war, not realizing that without all types of modern weapons available, you cannot sleep well

[Vladimir1155]

excellent or just good, this is a military secret, but their insufficient number is obvious, the named figure of 50 pennants is the minimum, and this is not even taking into account the Soviet outdated ships

[antivirus]

The Baltic is in flight (including due to the departure of the Outskirts) - it will take several years to equalize the situation, increasing the fleet there ... again there will be no 7x70 tons Will you cry over the Baltic aircraft carriers? ha ha. Shoigu fellow, he is not building aircraft carriers!

[Journalist]

The eighth Project 12700 mine defense ship (code Alexandrite) was laid down in St. Petersburg,

What Putin has been doing lately .. This is a complete failure of the "bloody regime", there is a pandemic in the world, and what is he doing ..)))) He stole money and there is no way to distribute to pensioners and support for tolerance, etc.
Where we roll hehe

[Alien From]

All kinds of ships are important, all kinds of ships are needed! Seven feet under the keel!

[xomaNN]

I visited the Srednevsky plant on the running gear of the minesweeper 1258 "Korund" at 82 meters. Well done, survived the hard times of the 90s and XNUMXs. And continue their mine action

[Pavel57]

How to repair holes and cracks in a fiberglass body?

[Vadim237]

There are adhesives like welding, but they dry for more than a day.

[Brylevsky]

There will be the wrong conditions for normal glue setting. "Dry, clean surface" - where to get it, when even through a properly wound plaster, filtration water flows? Only traditional damage control remedies come to my mind.

[Brylevsky]

Outside, start a plaster; a padded mat with a sliding stop from the inside; and run to the nearest dock. For cracks in the hull, the cement box helps well, but I doubt the fiberglass and cement will have good adhesion ...

[Vladimir1155]

no more difficult than steel, a mixture of polyethylene-polyamide with epoxy or polyester resin, 1 to 10, sets in 30 minutes

[Rzzz]

Quote: vladimir1155

no more difficult than steel,

You are greatly mistaken. Repairing a fiberglass hull is a VERY big problem. Due to the fact that the monolithic structure of the case is violated, due to the fact that the patch cannot be fully integrated into it, you will not completely restore the case. With minor damage, the loss of strength properties will be small, you can accept, and the larger the hole, the greater the loss of strength, and the less sense from the repair.
This is also the reason for the limited life of the composite body. It is impossible to repair it.
Another disadvantage is the non-recyclability of the housing materials. In 40 years this minesweeper will represent a hundred tons of environmentally hazardous waste, with which no one now knows what to do.
Metal cases are quietly, and even with some benefit, sawn for ferrous or nonferrous metal.

[garri-lin]

Fiberglass for hulls of boats has been used for a very long time. Starting from two-veselgo Tuzik and to ships of tens of tons. The hole is glued without problems.

[Rzzz]

And the patches also come off without problems. I saw how.

[garri-lin]

Several times I saw how yachts in a couple of tons were repaired. High-speed. The place of the patch is not even visible. If they come off, then they glued it like this. I think the military vessel will be able to provide proper care and maintenance.

[Rzzz]

A couple of tons is a small boat, 6 meters.
I drove a yacht that year. After several thousand kilometers at full speed, the bow thruster fairing fell off. Not a patch, of course, but also glued to the case. The yacht is new, from the shipyard, everything is certainly done there according to technology.

[garri-lin]

Nobody canceled the marriage. As a resident of the Black Sea coast, I can say for sure. A patch made by half-armed "workers" from cheap materials can be easily worn for several years with intensive exploitation. I think a properly done patch will be almost forever.

[Vladimir1155]

recycling fiberglass is not a problem, just burial, repair is also quite possible, if you observe the temperature regime and use high-quality material with a sufficiently rough high-quality surface treatment, layer by layer fiberglass, glass mats or fabrics are removed, a ladder is obtained, and it is not glued anyhow, then everything will be durable

[g9gdf9]

Quote: Pavel57

How to repair holes and cracks in a fiberglass body?

Using glue for ship modeling.

[Vladimir1155]

very useful ships!

[Sereg]

More good ships for the Navy!