SSN 637 Sturgeon

Sturgeon

SSN 637 Sturgeon (1970, Long)

Type	SSN
Country	USA
Displacement (t)	4,780
Length (m)	92.1
Beam (m)	9.7
Draft (m)	7.4
Height (m)	9.7
Max speed submerged (kn)	25.0
Max speed surfaced (kn)	15.0
Max safe depth (m)	305
Endurance (days)	70
Propeller	1 x 7 bladed propeller
Nuclear reactors	1
Titanium hull	No
Navigation system	SINS Mk 2 (Inertial Navigation System)
Class year	1970

Sensors

Sonar (9)

Name	Type	Platform	Passive range (km)	Active range (km)
BQA-8A	cav	sub	—	—
BQQ-3 Active	Hull	sub	—	4.3
BQQ-3 Hull (BQR-7)	Hull	sub	2.9	—
BQQ-3 Sphere (BQS-12)	Spherical	sub	3.4	—
BQS-14	Mine detection	sub	—	0.9
BSH-2	ssp	sub	—	—
DUUG-2	Active Intercept		—	—
UQG-1	com	sub	—	—
UQN-1B	Echo sounder	sub	—	—

Radar (1)

Name	NATO name	Air search	Surface search	Fire control
BPS-14		—	Yes	—

Launchers (2)

Name	Tubes	Fire control	Max launch depth (m)
533mm Torpedo Tube (forward) 4 Mk 113 Mod 6 305 1967 - 1970: 6 x Mk 16 Mod 8 , 14 x Mk 37 Mod 2 , 4 x UUM-44A SUBROC 1971 - 1973: 20 x Mk 48 Mod 1 , 4 x UUM-44A SUBROC 1974 - 1976: 20 x Mk 48 Mod 2 , 4 x UUM-44A SUBROC 1977 - 1982: 20 x Mk 48 Mod 3 , 4 x UUM-44A SUBROC 1983 - 1987: 20 x Mk 48 Mod 4 , 4 x UUM-44A SUBROC 1988 - present: 20 x Mk 48 Mod 5 ADCAP , 4 x UUM-44A SUBROC
Signal Ejector	2	—	305

Extendable devices (9)

Name	NATO name	Capabilities	Max depth (m)	Max speed (kn)
BPS-14 Radar	—	Radar	—	7.5
BRA-15 Radio Antenna	—	Radio (LF, MF, HF), Radio navigation	—	7.5
BRA-16 Radio Antenna	—	Radio (VLF), Radio navigation	—	7.5
BRD-6 RDF	—	Direction finder	—	7.5
SATCOM Antenna	—	Radio (UHF), Navsat, Satcom	—	7.5
Snorkel	—	Snorkel	—	7.5
Type 2D attack periscope	—	Periscope (attack)	—	7.5
Type 8 search periscope	—	Periscope (observation)	—	7.5
WLR-4 ESM	—	ESM	—	7.5

Towed devices (1)

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