Project 667BDRM Delfin

Project 667BDRM

NATO: Delta IV

Type	SSBN
Soviet designation	PLARB
NATO reporting name	Delta IV
Country	USSR
Displacement (t)	18,200
Length (m)	167.4
Beam (m)	11.7
Draft (m)	10.5
Height (m)	11.7
Max speed submerged (kn)	24.0
Max speed surfaced (kn)	15.4
Max safe depth (m)	320
Endurance (days)	80
Propeller	2 x 7 bladed propellers
Nuclear reactors	2
Titanium hull	No
Navigation system	Tobol-M-1 (Inertial Navigation System)
Class year	1986

Sensors

Sonar (10)

Name	Type	Platform	Passive range (km)	Active range (km)
MG-35 Shtil	com		—	—
MG-512 Vint	cav	sub	—	—
MG-518 Sever	Echo sounder	sub	—	—
MG-519	Mine detection	sub	—	1.5
MG-553 Zhgut-M	ssp		—	—
MGK-520 Skat-BDRM Active	Hull	sub	—	5.1
MGK-520 Skat-BDRM Cylindrical	Cylindrical	sub	3.4	—
MGK-520 Skat-BDRM Flank	Flank	sub	3.8	—
MGK-520 Skat-BDRM OGS	Active Intercept		—	—
Pelamida Towed Array	Towed	sub	3.4	—

Radar (3)

Name	NATO name	Air search	Surface search	Fire control
MRK-50 Kaskad		—	Yes	—
MRP-21 Zaliv-P		—	—	—
Zavesa-P		—	—	—

Launchers (3)

Name	Tubes	Fire control	Max launch depth (m)
533mm Torpedo Tube (forward) 4 — 500 1981 - present: 2 x SAET-60M , 2 x URPK-6 Vodopad-PL (84R) , 6 x USET-80
Missile Launcher 16 — 60 1984 - present: 16 x R-29RM
VIPS	2	—	100

Extendable devices (13)

Name	NATO name	Capabilities	Max depth (m)	Max speed (kn)
Anis Radio Antenna	—	Radio (LF, MF, HF), Radio navigation	—	7.5
Iva-MV Radio Antenna	—	Radio (VLF, LF, MF, HF, VHF), Radio navigation	—	7.5
MRK-50 Kaskad Radar	—	Radar	—	7.5
MRP-21 Zaliv-P ESM	—	ESM	—	7.5
MT-70-8 Periscope (Television)	—	—	—	7.5
Pop-up Camera (VSK)	—	—	—	7.5
PR-14 Astrocorrector periscope	—	Periscope (astro)	—	7.5
PZNG-8M attack periscope	—	Periscope (attack)	—	7.5
PZNS-8 Search periscope	—	Periscope (observation)	—	7.5
RDP	—	Snorkel	—	7.5
Saiga Radiosextant	—	Radio sextant	—	7.5
UHF / Satcom	—	Radio (UHF), Navsat, Satcom	—	7.5
Zavesa-P RDF	—	Direction finder	—	7.5

Towed devices (1)

Name	Type	NATO name	Towed decoy	Capabilities	Cable (m)	Depth (m)	Speed (kn)
VBAU Phosphorus	Trailing wire	—	—	Receive, Radio (VLF, LF, Radio navigation)	549	91 – 37	2.3 – 9.0