Tench (Fleet Snorkel)

Tench

Type	SS
Country	USA
Displacement (t)	2,440
Length (m)	95.0
Beam (m)	8.3
Draft (m)	5.2
Height (m)	8.3
Max speed submerged (kn)	10.0
Max speed surfaced (kn)	20.0
Max safe depth (m)	213
Endurance (days)	75
Diesel-electric	Yes
Titanium hull	No
Class year	1951

Sensors

Sonar (7)

Name	Type	Platform	Passive range (km)	Active range (km)
BQR-2B	Hull	sub	1.3	—
BQR-3A	Hull	surf	0.9	—
BQS-2	Mine hunting	sub	—	0.9
BQS-2	Mine hunting	sub	—	0.9
BSH-2	ssp	sub	—	—
OMA	cav		—	—
UQN-1B	Echo sounder	sub	—	—

Launchers (3)

Name	Tubes	Fire control	Max launch depth (m)
533mm Torpedo Tube (forward) 6 TDC 305 1962 - present: 8 x Mk 14 Mod 3 , 8 x Mk 37 Mod 0
533mm Torpedo Tube (aft) 4 TDC 305 1962 - present: 8 x Mk 14 Mod 3
Signal Ejector	2	—	305

Extendable devices (8)

Name	NATO name	Capabilities	Max depth (m)	Max speed (kn)
BLR-1 ESM	—	ESM	—	6.5
BPS-5A Radar	—	Radar	—	6.5
BRA-9 Radio antenna	—	Radio (LF, MF, HF), Radio navigation	—	6.5
BRD-6B RDF	—	Direction finder	—	6.5
BRR Radio Antenna	—	Radio (VLF)	—	6.5
Snorkel	—	Snorkel	—	6.5
Type 2F Attack periscope	—	Periscope (attack)	—	6.5
Type 8D Search periscope	—	Periscope (observation)	—	6.5