1. United States
  2. Submarine
  3. SSN 671 Narwhal

Basic Information

Category Submarine Type SSN - Nuclear Powered Attack Submarine
Year Commissioned 1987 Year Decommissioned 0
Nationality United States Hypothetical No
Beam 9.7 m Draft 8.8 m
Height 14 m Length 96 m
Crew 120 people Damage Points (DP) 36
Standard Displacement 5027 tons Full Displacement 5378 tons
Empty Displacement 0 tons

Sensor Parameters

Model Purpose Range Scan Interval Generation
AN/WLR-9A Acoustic Intercept & Torpedo Warning 0 - 15.00 nm 5 sec Early 1980s
AN/WLQ-4 Sea Nymph SIGINT (ELINT & COMINT) w/ OTH Targeting 0 - 500.00 nm 20 sec Early 1980s
AN/TB-16A TASS, Passive-Only Fat Line Towed Array Sonar System 0 - 70.00 nm 15 sec Early 1980s
AN/BQS-14 Hull Sonar, Active-Only Under-Ice Navigation and Mine & Obstacle Avoidance 0 - 0.20 nm 15 sec Late 1960s
AN/BPS-14 Radar, Surface Search, Short-Range 0.10 - 40.00 nm 8 sec Late 1960s
AN/BQQ-5C(V)2 [BQS-12] Hull Sonar, Active/Passive Search & Track 0 - 40.00 nm 15 sec Late 1980s
AN/BRD-6 HF/DF 0 - 500.00 nm 20 sec Late 1960s
Generic Submarine Periscope, Optical Visual, Surveillance Periscope 0 - 22.50 nm 10 sec Visual
Generic Submarine Periscope, LLTV LLTV, Surveillance & Navigation Camera 0 - 22.50 nm 10 sec LLTV, 2nd Generation (1980s/1990s)

Submarine Capabilities Code

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Signatures

Type Front Side Rear
Passive Sonar, VLF (0-1000 Hz, 200 Hz Center Frequency) 110 dB 111 dB 112 dB
Passive Sonar, LF (1-5 KHz, 3 KHz Center Frequency) 80.5 dB 81 dB 82 dB
Passive Sonar, MF (5-10 KHz, 7.5 KHz Center Frequency) 72.5 dB 73 dB 74 dB
Passive Sonar, HF (10-500 KHz, 20 KHz Center Frequency) 64 dB 65 dB 66 dB
Active Sonar, VLF-HF (0-500 KHz) 30 dB 200 dB 30 dB
Visual Detection Range 2.62 nm 4.37 nm 2.62 nm
Visual Classification Range 0.66 nm 1.09 nm 0.66 nm
Infrared Detection Range 2.62 nm 4.37 nm 2.62 nm
Infrared Classification Range 0.66 nm 1.09 nm 0.66 nm
Radar, A-D Band (30-2000 MHz) 34.8 dBsm (3019.95 m²) 39.6 dBsm (9120.11 m²) 34.8 dBsm (3019.95 m²)
Radar, E-M Band (2-100 GHz) 34.8 dBsm (3019.95 m²) 39.6 dBsm (9120.11 m²) 34.8 dBsm (3019.95 m²)

Default Configuration

Model Capacity Fire Interval Comments
533mm Mk67 TT 1 5 sec 1987, SSN, UGM-84
533mm Mk67 TT 1 5 sec 1987, SSN, Mk48
3-inch Signal Ejector 2 1 sec 1979, ADC Mk2 Mod 0, 2x Tubes

Magazine Systems

Magazine Name Capacity Comments
CSA Mk1 Signal Ejector 20 1979, ADC Mk2 Mod 0
533mm Torpedo 15 1987, Narwhal

Datalink

ID Type Model Range Channels
8002 Two-Way Wire Guidance Torpedo Wire Control [2 Wires] 30 nm 2
7001 Radio VHF Radio [Unsecure] 100 nm 0
7001 Radio UHF Radio [Unsecure] 100 nm 0
7001 Radio LF Radio [Unsecure] 100 nm 10
7001 Radio VHF Radio [Secure] 100 nm 0
7001 Radio VLF Radio [Unsecure] 100 nm 0
2003 MILSTAR SATCOM MILSTAR SATCOM 0 nm 0
7001 Radio HF Radio [Unsecure] 300 nm 10
7001 Radio UHF Radio [Secure] 100 nm 0

Engines

Model Type Combined Type Engine Count Shafts Primary Engines Secondary Engines Hypothetical Comments
1x General Electric S5G Nuclear Reactor Nuclear N/A 1 1 1 - No -