Project 661 Anchar

Project 661

NATO: Papa

Type	SSGN
Soviet designation	PLARK
NATO reporting name	Papa
Country	USSR
Displacement (t)	6,750
Length (m)	106.9
Beam (m)	11.5
Draft (m)	8.1
Height (m)	11.5
Max speed submerged (kn)	44.7
Max speed surfaced (kn)	16.0
Max safe depth (m)	320
Endurance (days)	60
Propeller	2 x 5 bladed propellers
Nuclear reactors	2
Titanium hull	Yes
Navigation system	Sigma-661 (Automatic Dead Reckoning)
Class year	1969

Sensors

Sonar (8)

Name	Type	Platform	Passive range (km)	Active range (km)
MG-25	com	sub	—	—
MG-43 Gorizont	ssp		—	—
MG-509 Radian	Mine detection	sub	—	1.3
MGK-300 Rubin Active	Hull	sub	—	4.3
MGK-300 Rubin Cylindrical	Cylindrical	sub	1.7	—
MGK-300 Rubin flank array	Flank	sub	2.1	—
MGK-300 Rubin 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 (3)

Name	Tubes	Fire control	Max launch depth (m)
533mm Torpedo Tube (forward) 4 Ladoga-P-661 250 1969 - 1971: 2 x 53-56N , 10 x SET-65M 1972 - 1985: 2 x 53-56N , 2 x RPK-2 Vyuga (81R) , 8 x SET-65M 1986 - present: 2 x 53-56N , 2 x RPK-2 Vyuga (81R) , 8 x SET-65K
Missile Launcher 10 Ametist FCS 40 1969 - present: 6 x P-70 , 4 x P-70 (N)
VIPS	2	—	250

Extendable devices (7)

Name	NATO name	Capabilities	Max depth (m)	Max speed (kn)
Bow hydroplanes	—	Bow hydroplanes	—	7.5
Iskra-1 Radio antenna	—	Radio (LF, MF, HF), Radio navigation	—	7.5
MRP-21 Zaliv-P ESM	—	ESM	—	7.5
PZNS-10 Search periscope	—	Periscope (observation)	—	7.5
RKP	—	Snorkel	—	7.5
RLK-101 Albatross Radar	—	Radar	—	7.5
Veslo-P RDF	—	Direction finder	—	7.5