Project 667A Navaga

Project 667A

NATO: Yankee I

Project 667AU Nalim

Type	SSBN
Soviet designation	PLARB
NATO reporting name	Yankee I
Country	USSR
Displacement (t)	10,020
Length (m)	128.0
Beam (m)	11.7
Draft (m)	7.9
Height (m)	11.7
Max speed submerged (kn)	27.0
Max speed surfaced (kn)	15.0
Max safe depth (m)	320
Endurance (days)	70
Propeller	2 x 5 bladed propellers
Nuclear reactors	2
Titanium hull	No
Navigation system	Tobol (Inertial Navigation System)
Class year	1975

Sensors

Sonar (8)

Name	Type	Platform	Passive range (km)	Active range (km)
MG-25	com	sub	—	—
MG-43 Gorizont	ssp		—	—
MGK-100 Kerch Active	Hull	sub	—	3.4
MGK-100 Kerch Cylindrical	Cylindrical	sub	1.7	—
MGK-100 Kerch flank array	Flank	sub	2.1	—
MGK-100 Kerch Mine Detection	Mine detection	sub	—	1.3
MGK-100 Kerch OGS	Active Intercept		—	—
NEL-6	Echo sounder	sub	—	—

Radar (3)

Name	NATO name	Air search	Surface search	Fire control
MRP-21 Zaliv-P		—	—	—
RLK-101 Albatros	Snoop Tray 1	—	Yes	—
Zavesa-P		—	—	—

Launchers (4)

Name	Tubes	Fire control	Max launch depth (m)
400mm Torpedo Tube (forward) 2 Brest-667A 250 1967 - 1967: 2 x SET-40 1968 - present: 2 x SET-40U
533mm Torpedo Tube (forward) 4 Brest-667A 250 1967 - 1967: 0 x 53-56 , 0 x 53-57 , 4 x 53-61 , 8 x SET-65 1968 - 1968: 0 x 53-56 , 0 x 53-57 , 4 x 53-61 , 8 x SET-65 1969 - 1971: 0 x 53-56 , 0 x 53-57 , 4 x 53-61M , 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 16 D-5U FCS 60 1971 - present: 16 x R-27U
Signal Ejector	2	—	100

Extendable devices (12)

Name	NATO name	Capabilities	Max depth (m)	Max speed (kn)
Iva-M Radio Antenna	—	Radio (VLF, LF, MF, HF, VHF), Radio navigation	—	7.5
MRP-21 Zaliv-P ESM	—	ESM	—	7.5
MT-70-8 Periscope (Television)	—	—	—	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
RLK-101 Albatross Radar	—	Radar	—	7.5
Saiga Radiosextant	—	Radio sextant	—	7.5
UHF / Satcom	—	Radio (UHF), Navsat, Satcom	—	7.5
VAN-S Radio Antenna	—	Radio (LF, MF, HF), Radio navigation	—	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