Project 667B Murena

Project 667B

NATO: Delta I

Type	SSBN
Soviet designation	PLARB
NATO reporting name	Delta I
Country	USSR
Displacement (t)	11,000
Length (m)	139.0
Beam (m)	11.7
Draft (m)	8.4
Height (m)	11.7
Max speed submerged (kn)	25.0
Max speed surfaced (kn)	16.0
Max safe depth (m)	320
Endurance (days)	80
Nuclear reactors	2
Titanium hull	No
Class year	1972

Sensors

Sonar (7)

Name	Type	Platform	Passive range (km)	Active range (km)
MG-43 Gorizont	ssp		—	—
MG-509 Radian	Mine hunting	sub	—	1.3
MGK-100 Kerch Active	Hull	sub	—	3.4
MGK-100 Kerch AIR	Active Intercept		—	—
MGK-100 Kerch Cylindrical	Cylindrical	sub	1.7	—
MGK-100 Kerch flank array	Flank	sub	2.1	—
NEL-6	Echo sounder	sub	—	—

Radar (3)

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

Launchers (4)

Name	Tubes	Fire control	Max launch depth (m)
400mm Torpedo Tube (forward) 2 Brest-667B 250 1967 - 1967: 2 x SET-40 1968 - present: 2 x SET-40U
533mm Torpedo Tube (forward) 4 Brest-667B 250 1967 - 1967: 4 x 53-65 , 8 x SET-65 1968 - 1968: 4 x 53-65 , 8 x SET-65 1969 - 1971: 4 x 53-65M , 8 x SET-65 1972 - 1985: 4 x 53-65K , 8 x SET-65M 1986 - present: 4 x 53-65K , 8 x SET-65K
Missile Launcher 12 — 60 1974 - present: 12 x R-29
Signal Ejector	2	—	100

Extendable devices (12)

Name	NATO name	Capabilities	Max depth (m)	Max speed (kn)
Anis Radio Antenna	—	Radio (LF, MF, HF), Radio navigation	—	6.5
Iva-M Radio Antenna	—	Radio (VLF, LF, MF, HF, VHF), Radio navigation	—	6.5
MRK-50 Kaskad Radar	—	Radar	—	6.5
MRP-21 Zaliv-P ESM	—	ESM	—	6.5
MT-70-8 Periscope (Television)	—	—	—	6.5
Pop-up Camera (VSK)	—	—	—	6.5
PR-14 Astrocorrector periscope	—	Periscope (astro)	—	6.5
PZNG-8M attack periscope	—	Periscope (attack)	—	6.5
PZNS-8 Search periscope	—	Periscope (observation)	—	6.5
RDP	—	Snorkel	—	6.5
Saiga Radiosextant	—	Radio sextant	—	6.5
Zavesa-P RDF	—	Direction finder	—	6.5

Towed devices (1)

Name	Type	NATO name	Towed decoy	Capabilities	Cable (m)	Depth (m)	Speed (kn)
VVABT Paravan	Trailing buoy	—	—	Receive, Radio (VLF)	300	150 – 50	3.0 – 12.0