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DELFIN project 667 BDRM submarine

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DELFIN project 667 BDRM submarine

Postby aukepalmhof » Fri May 10, 2019 9:35 pm

2014 DEL'PHIL Projecr 667 BDRM (2).jpg
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On the stamp is given DEL’PHIN.

The seven boats were all built on the Severodvinsk Shipyard for the Navy of the Soviet Union.
Commissioned from 1984 till 1990.
Displacement13,500 ton surfaced and 18,200 ton submerged, dim. 166 x 12.3 x 8.8m. (draught)
Powered by two pressurized water-cooled reactors powering two steam turbines with two fixed-pitched shrouded propellers. Speed surfaced, 14 knots, submerged 24 knots.
Armament 16 missiles and 4 - 533mm bow torpedo tubes.
Crew 135.

Seven Delta IV-class submarines were built; all are still in service in the Russian Navy. The submarines, based at the Sayda Guba Naval Base, operate in the Northern Fleet. The Severodvinsk Shipyard built these vessels between 1981 and 1992. The last vessel was K-407 Novomoskovsk.
The design of the Delta IV class resembles that of the Delta III class and constitutes a double-hulled configuration with missile silos housed in the inner hull.
The submarine has an operational diving depth of 320 meters (1,050 ft), with a maximum depth of 400 meters (1,300 ft). The propulsion system allows speeds of 24 knots (44 km/h) submerged using two VM-4 pressure water reactors rated at 180 MW. It features two turbines of type GT3A-365 rated at 27.5 MW. The propulsion system drives two shafts with fixed-pitch propellers.

On 29 December 2011, a shipyard fire broke out in the drydock where a Delta IV-class vessel named YEKATERINBURG was being serviced. It was reported that the fire managed to spread to the submarine, that all weapons were disembarked from the submarine and the nuclear reactor was shut down beforehand

Overall design
The submarine design is similar to that of Delta III class (Project 667 BDR). The submarine constitutes a double-hulled configuration with missile silos housed in the inner hull. The forward horizontal hydroplanes are arranged on the sail. They can rotate to the vertical for breaking through the ice cover. The propulsion system provides a speed of 14 knots (26 km/h; 16 mph) surfaced and 24 knots (44 km/h; 28 mph) submerged. The submarine carries supplies for an endurance of 80 days. The surface of the submarine has an acoustic coating to reduce the acoustic signature. During the development of the 667BDRM SSBN several measures were included to reduce its noise level. The gears and equipment are located on a common base isolated from the pressure hull, and the power compartments are also isolated. The efficiency of the anti-hydroacoustic coatings of the light outer hull and inner pressure hulls have been increased. Newly designed propellers with improved hydroacoustic characteristics are employed.

The Delta IV-class submarines employs the D-9RM launch system and carries 16 R-29RMU Sineva liquid-fueled missiles which each carry four independently targetable reentry vehicles (MIRVs). Unlike previous modifications, the Delta IV-class submarine is able to fire missiles in any direction from a constant course in a circular sector. The underwater firing of the ballistic missiles can be conducted at a depth of 55 meters (180 ft) while cruising at a speed of 6–7 knots (11–13 km/h; 6.9–8.1 mph). All the missiles can be fired in a single salvo.
The 667BDRM Delphin submarines are equipped with the TRV-671 RTM missile-torpedo system that has four torpedo tubes with a calibre of 533 mm (21 in). Unlike the Delta III-class design, it is capable of using all types of torpedoes, antisubmarine torpedo-missiles and anti-hydroacoustic devices. The battle management system Omnibus-BDRM controls all combat activities, processing data and commanding the torpedo and missile-torpedo weapons. The Shlyuz navigation system provides for the improved accuracy of the missiles and is capable of stellar navigation at periscope depths. The navigational system also employs two floating antenna buoys to receive radio-messages, target destination data and satellite navigation signals at great depth. The submarine is also equipped with the Skat-VDRM hydroacoustic system.

The Delta IV-class submarines are strategic nuclear missile submarines designed to carry out strikes on military and industrial installations and naval bases. The submarine carries the RSM-5 Makeyev (NATO reporting name: SS-N-23 Skiff) submarine-launched ballistic missile (SLBM). The RSM-54 is a three-stage liquid-propellant ballistic missile with a range of 8,300 km (5,200 mi). The warhead consists of four to ten multiple, independently targeted re-entry vehicles (MIRVs) each rated at 100 kilotonnes of TNT (420 TJ). The missile uses stellar inertial guidance to provide a circular error probable (CEP) of 500 m (1,600 ft). The CEP value is a measure of the accuracy of strike on the target and is the radius of the circle within which half the strikes will impact.
The submarine is also capable of launching the Novator SS-N-15 Starfish anti-ship missile or anti-ship torpedoes. Starfish is armed with a nuclear warhead and has a range of up to 45 km (28 mi). The submarine has four 533 mm torpedo tubes capable of launching all types of torpedoes, including anti-submarine torpedoes and anti-hydroacoustic devices. The system is fitted with a rapid reloading torpedo system. The submarine can carry up to 12 missiles or torpedoes. All torpedoes are accommodated in the bow section of the hull.
In 2011 K-84 EKATERINBURG successfully tested a new version of the SS-N-23 missile, reportedly designated R-29RMU2 Layner. The missile has improved survivability against anti-ballistic missiles. Later on K-114 TULA conducted another successful launch.

Initially all the Delta IV-class submarines were based with the Russian Northern Fleet at Olenya Bay. All the submarines of this class serve in 12th Squadron (the former 3rd flotilla) of strategic submarines of the Northern Fleet, which now located in Yagelnaya Bay.

2019 Six boats of this class are still in active service. ... DRM_Delfin)_7_boats
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