Series of raid minesweepers "Sapphire" project 10750

6
RT "Sapphire" becomes the next stage in the development of the 1258 project, with the third engine installed, new weapons and designs of improved materials. The raid minesweeper project was redesigned in the second half of 1980. The main developer is PKB Almaz. The head of work - GK V. Blinov.

The main purpose of RT "Sapphire" - mine protection, search, trawling and destruction of mines in coastal areas, in areas of naval bases, dispersed basing at depths of no more than 80 meters.

Series of raid minesweepers "Sapphire" project 10750


Device and design of RT "Sapphire"
In the manufacture of the hull of the ship were used new solutions of fiberglass, which ultimately led to a decrease in displacement and magnetic field (important for their own protection when working with hydrodynamic mines at shallow depth). Solutions were also applied that reduced the intensity of the physical field of the new ship, used low-magnetic steel type SW to create the bearing parts of the hull and mechanisms, the lines of force were made in special insulation. Hatches, doors, fences, gangways and fenders were made of aluminum and magnesium alloys.

The upper deck of the RT "Sapphire" was made straight with the hull nasal hull with a bulwark almost to the superstructure. The superstructure itself has smooth contours, a navigation bridge, a ventilation enclosure, a triangular mast, a control post for seekers and trawls, large panoramic windows (a wheelhouse), which provided a large viewing angle both on the course and on the traverse.



Eight compartments separated by watertight bulkheads ensured the durability and floodability of the raid minesweeper:
- compartment with chain box, forepeak;
- compartment of modular;
- compartment with cockpit on 12 sailors, with two tanks for fresh water, zip and POU;
- a compartment with cabins of the commander and junior commanders, two vestibules, a galley, waste tanks and an air-conditioning room;
- engine compartment (bow compartment);
- engine compartment (aft compartment) with two fuel tanks;
- compartment trawls, fencing MANPADS and one tank with fresh water;
- compartment of the tiller compartment.

Compared with the project 1258, the crew is reduced. This was achieved by technological means - automation and remote control of technical means of the ship. With the GKP automation system, the control of the technical equipment of the ship is provided. In addition to the air conditioning system, protection against mass destruction weapons was established.

The degaussing of the ship consists of a full-fledged system with automatic regulation, which included: the main horizontal winding; battox exchange rate winding; ring course winding, both general ship and local execution. The sweeping technical equipment consisted of a sweeper winch, a swinging overhead crane, a hydraulically driven mooring spire. Steering - hydraulic steering gear, semi-balance steering wheel. The steering control is a simplified system with tracking and automatic control mode. Power - three-shaft, mechanical with three diesel engines of the four-stroke type ZD-12 with a direct fuel injection system, with a total power of 1200 hp The 3 diesel transmitted power to the 3 propeller using reverse gear units. Warranty life of diesel engines - 4.5 thousands of hours. Overhaul - 14 thousands of hours. The weight of a diesel 2.1 tons. Management - automatic remote. The power grid is an alternating current 380В, produced by 3 diesel generators, with a total power of 150 kW. In emergency situations, 12B emergency lighting from rechargeable batteries is used.



Armament RT "Sapphire":
- six-barreled artillery 30mm installation AK-306М. It is installed on the tank. Rate of fire to 5000 high / min. The horizon / vertical pointing angles are 180 / -12 + 88 degrees. Defeat range to 8 kilometers. Food tape, round shop with 2 000 shots. AK-306M control - XDUMX-219 Speaker system;
- MANPADS "Strela-3". Ammunition eight sets. Speed ​​9K34 - 670 m / s. The range of destruction - 0.5-4.5 kilometers horizontally, in height - 0.015-3 kilometers on targets with a speed of no more than 310 m / s. Control - passive IR GOS. Weight - 16 kilogram;
- contact deep-sea trawl GKT-3MO (set). The main purpose is the trawling of anchor type mines. The trailing trawl can operate at a depth of 5-120 meters and a width of up to 130 meters with a cruising speed of up to 12 nodes and a rough sea no more than 5 points. The trawl consists of: towing cable, 1-2 standard hydrodynamic MT-3, 2 parts of the trawl and 2 diverter. All elements of the trawl are made of low-magnetic alloys. Trawling range from ship to 180 meters;
- electromagnetic solenoid trawl SAMT-1. The main purpose against induction and magnetic bottom min. The principle of operation is the impact on the mines by a magnetic field. The trawling width is 65 meters, the depth is no more than 30 meters at the speed of the ship 8 knots and waves of the sea to 4 points. Trawling distance from the ship 150-180 meters;
- acoustic trawl AT-6. The main purpose against the combined and acoustic min. The principle of operation is acoustic radiation;
- seeker-destructive complex KIU-2M. The main purpose is the search, detection and destruction of mines and explosive objects located along the course. It consists of GAS MG-99А1 "Kabarga-А1", TV-driven STIU-2 "Ketmen";
- cord charges, 2 units, in 200 meters. Purpose - the destruction of bottom, bottom mines. Depth of action - 5-100 meters at a speed of 6 knots;

Equipment
The equipment includes the Mius navigation radar and the Brass radio navigation system. Mius station operates in the range of centimeter waves. Power up to 7kW. Detection characteristics: ship up to 10 miles, marine buoy type objects up to 2 miles. Limited to 30 meter area around the ship.

The entire series of RT "Sapphire"
The raid minesweepers were built at the shipyard №363 in the village of Pontonny:
- RT-57. Head ship series. Factory number 350. Start of construction - October 1986. Launched from stocks in July 1987. Joined the Baltic fleet in December 1989. Board number 316;



-Rt-xnumx. Factory number 341. Start of construction - January 351. Launched in April 1987. Entered the Baltic Fleet in December 1989. Onboard 1989. Written off in June 331;
- Pm-248. Factory number 352. Start of construction - March 1987. Launched from the stocks in February 1990. Entered the Baltic Fleet in September 1990 of the year under number XXUMX. Converted to the ship-driver of the project 348;
- RT-249. Factory number 353. Start of construction - April 1987. Launched from the stocks in July 1990. Entered the Baltic Fleet in December 1990. Board №206;
- RT-252. Factory number 354. Start of construction - October 1987. Launched in September 1991. Entered the Baltic Fleet in December 1991. Board №239;



- RT-273. Factory number 355. Start of construction - March 1988. Launched in December 1991. Entered the Baltic Fleet in September 1992. Board №210;
- RT-231. Factory number 356. Start of construction - July 1988 of the year. Launched in August 1992. Entered the Baltic Fleet in August 1993. Board №302;
- RT-233. Factory number 357. Start of construction - October 1988. Launched from the stocks in July 1993. Entered the Caspian Flotilla in September 1994. Board №219;
- RT-234. Factory number 358. Start of construction - April 1989. Launched from the stocks in March 1994. In formation since August 1996, the Caspian Flotilla. Board №215;



In total, it was planned to build 15 ships of the 10750 project, nine were built in total, four more ships were laid, but the construction was frozen. It was planned to create an export version - the project 10750E.

Key Features:
- displacement standard / full - 131 / 135 tons;
- Length - 31.5 meters;
- width - 6 meters;
- draft - 1.6 meter;
- power - three diesel engines ZD-12;
- EI - three diesel generators for 50 kW;
- economy / full / trawling speed - 10 / 12 / 6-10 nodes;
- range to 400 miles;
- autonomous swimming - hours 72;
- seaworthiness not more than 5 points;
- Combat weapons: AK-306M, Strela-3 MANPADS (8 units); trawls: GKT-3MO, SAMT-1, AT-6; KIU-2М, 2ХШЗ-200;
-Equipment: GAS MG-99А1, equipment НВ "Khmel", radar "Nichrom", navigation radar "Mius", navigation system "Brass", radio direction finder АПР-50Р, echo sounder NEL-MZB;
- crew - 15 (officer, two midshipmen) sailors.

Information sources:
http://and-kin2008.narod.ru/pr10750.html
http://forums.airbase.ru/2012/10/t67303,5--rejdovyj-tralschik-pr-10750-shifr-sapfir.6552.html
http://russian-ships.info/boevye/10750.htm
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6 comments
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  1. +1
    6 December 2012 11: 03
    In total, it was planned to build 15 ships of the project 10750, a total of nine were built, four more ships were laid down, but the construction was frozen


    one has already been written off, and what's next ...
  2. Lucky
    0
    6 December 2012 11: 54
    Then the rest will be written off slowly, the new ones have gone from carbon fiber like, they are smart they need to be put into operation instead
  3. 0
    6 December 2012 15: 41
    Thank you for the article!! +
  4. 0
    6 December 2012 18: 43
    A good hard worker, which in reality needs much more.
  5. 0
    6 December 2012 19: 36
    I don’t even want to write anything. How outdated and how to brag about such ships.
  6. 0
    8 December 2012 13: 50
    Minesweepers need sea mines and are now effective weapons. As minesweepers were not enough in the Baltic in 1941. during the Tallinn breakthrough.

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